单选题Bill can inspect a case of cell phones in 6 hours. Jack can inspect the same case of cell Phones in 4 hours. After working alone for l hour, Bill stops for lunch. After taking a 30-minute lunch break. Bill and Jack work together to inspect the remainin
题目
单选题
Bill can inspect a case of cell phones in 6 hours. Jack can inspect the same case of cell Phones in 4 hours. After working alone for l hour, Bill stops for lunch. After taking a 30-minute lunch break. Bill and Jack work together to inspect the remaining cell phones. How long do Bill and Jack work together to complete the job?
A
1 hr. and l2 min
B
1 hr. and 24 min
C
2 hrs
D
2 hrs and lo min
E
2 hrs and 20 min
相似考题
更多“单选题Bill can inspect a case of cell phones in 6 hours. Jack can inspect the same case of cell Phones in 4 hours. After working alone for l hour, Bill stops for lunch. After taking a 30-minute lunch break. Bill and Jack work together to inspect the remainin”相关问题
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第1题：
Many people driving around the suburbs in their giant SUVs while taking on their new cell phones are, in fact, deeply ____.A、in despair
B、in order
C、in debt
参考答案：C
-
第2题：
There's no doubt that work has found its way into every hour of our day, thanks to beepers, cell phones and e-mail.
参考答案：毫无疑问, 由于传呼机、手机和电子邮件的广泛使用，工作已经渗入到我们的每日每刻。
-
第3题：
In case of inconsistency between this bill of lading and the applicable tariff，this bill of lading shall ______.
A.prevail
B.provide
C.apply
D.supply
正确答案：A
-
第4题：
In a significant tightening of legal controls over the press,Lord Irvine,the Lord Chancellor,will introduce a（ ）bill that will propose making payments to witnesses illegal and will strictly control the amount of publicity that can be given to a case before a trial begins.A.sketch
B.rough
C.preliminary
D.draft答案：D解析：A.sketch指“略图，草图；粗样；草稿；速写，素描”。B.rough指“粗糙的，表面不平的；粗暴的，粗鲁的，粗野的”；C.preliminary指“预备的；初步的；序言性的”；D.draft指“草稿，草案，草图”，draft bill（bill指由立法委员会提出的法律草案）是固定搭配。 -
第5题：
It can not be used before ( ).
A. inspect B. inspected
C. being inspected D. inspecting答案：C解析： -
第6题：
共用题干
Cell Phones
I Believe it or not,cell phones have been around for over a quarter of a century.The first commercial
cell phone systemfl was developed by the Japancoc in I 979.But cell phones have changed a lot
since that
time.The early cell phones were big and heavy but they have developed into small and light palm-sized mod-
els.There have been huge (lcveloprnents in their functions,too;we have had call forwarding,text messaging,
answering services and hands-free use for years,but now there are countless new facilities,su,ch as instant ac-
cess to the Internet and receiving and sending photos.
2 Cell phones have become very common in our lives;recent statistics suggest as many as one in three
people cii the planet now have a cell phone,and most of them say they couldn't live without one.Cell phones
are used in every area of our lives and have become a necessary tool,used for essential arrangements,social
contact and business.They have made it easier to call for help on the highway.They have made it possible to
keep in touch with people"on the move”一when people are traveling.
3 Cell phones have made communication easier and have reduced the need for family arguments.We
can use cell phones to let our family know we'11 be late or if there’。a sudden change of tian or an emergen-
cy.Cell phones have eased the worries of millions of parents when their teenagers are out late,they can now
contact their children at any time.
4 This does not mean that cell phones are all good news.They have brought with them a number of
new headaches for their owners;it costs a lot to replace stolen phones,something that is becoming a frequent
occurrence,and have you ever seen such huge phone bills? More serious,however,is the potential health
problem they bring:there are fears that radiation from the phones may cause brain tumor（肿瘤）.This may be
a time bomb waiting to happen to younger people who have grown up with cell phones that they simply can't
live without!Paragraph 3________
A:Cell Phones and the Family
B:Commercial Cell Phone Systems
C:Cell Phones in Everyday Life
D:Cell Phones for Teenagers
E:History of Cell Phones
F:Problems with Cell Phones答案：A解析：第一段开篇就说从手机发明到现在已过去了四分之一多个世纪，又对比了手机早期和 近期在功能一上的不同，由此可知是在叙述手机的历史。
第二段讲手机在人们的生活中十分常见，许多人离不开手机，手机用于各个场合，因而 意在说明手机存在于日常生活中。
第三段列举了手机对于家人联系上的作用，有助于减少家庭的误会纠纷，有助于父母 联系孩子，因而讲的是手机同家庭的关系。
最后一段第一句就说明了该段要讲的是手机带来的问题，段中虽举了青少年的例子，但 不局限于描写青少年，因此选F。
根据第一段末尾可知答案。
根据第二段第三行可知答案。
根据第三段第二句可知答案。
根据第四段第二句可知答案。第4部分；阅读理解第一篇 本文主要介绍了北极冰川融化的情况、原因和科学家们的担心。 -
第7题：
共用题干
Cell Phones
I Believe it or not,cell phones have been around for over a quarter of a century.The first commercial
cell phone systemfl was developed by the Japancoc in I 979.But cell phones have changed a lot
since that
time.The early cell phones were big and heavy but they have developed into small and light palm-sized mod-
els.There have been huge (lcveloprnents in their functions,too;we have had call forwarding,text messaging,
answering services and hands-free use for years,but now there are countless new facilities,su,ch as instant ac-
cess to the Internet and receiving and sending photos.
2 Cell phones have become very common in our lives;recent statistics suggest as many as one in three
people cii the planet now have a cell phone,and most of them say they couldn't live without one.Cell phones
are used in every area of our lives and have become a necessary tool,used for essential arrangements,social
contact and business.They have made it easier to call for help on the highway.They have made it possible to
keep in touch with people"on the move”一when people are traveling.
3 Cell phones have made communication easier and have reduced the need for family arguments.We
can use cell phones to let our family know we'11 be late or if there’。a sudden change of tian or an emergen-
cy.Cell phones have eased the worries of millions of parents when their teenagers are out late,they can now
contact their children at any time.
4 This does not mean that cell phones are all good news.They have brought with them a number of
new headaches for their owners;it costs a lot to replace stolen phones,something that is becoming a frequent
occurrence,and have you ever seen such huge phone bills? More serious,however,is the potential health
problem they bring:there are fears that radiation from the phones may cause brain tumor（肿瘤）.This may be
a time bomb waiting to happen to younger people who have grown up with cell phones that they simply can't
live without!Paragraph 4_________
A:Cell Phones and the Family
B:Commercial Cell Phone Systems
C:Cell Phones in Everyday Life
D:Cell Phones for Teenagers
E:History of Cell Phones
F:Problems with Cell Phones答案：F解析：第一段开篇就说从手机发明到现在已过去了四分之一多个世纪，又对比了手机早期和 近期在功能一上的不同，由此可知是在叙述手机的历史。
第二段讲手机在人们的生活中十分常见，许多人离不开手机，手机用于各个场合，因而 意在说明手机存在于日常生活中。
第三段列举了手机对于家人联系上的作用，有助于减少家庭的误会纠纷，有助于父母 联系孩子，因而讲的是手机同家庭的关系。
最后一段第一句就说明了该段要讲的是手机带来的问题，段中虽举了青少年的例子，但 不局限于描写青少年，因此选F。
根据第一段末尾可知答案。
根据第二段第三行可知答案。
根据第三段第二句可知答案。
根据第四段第二句可知答案。第4部分；阅读理解第一篇 本文主要介绍了北极冰川融化的情况、原因和科学家们的担心。 -
第8题：
Two database users, Jack and Bill, are accessing the SupportCenter STAFF table of the SupportCenter DB database. When Jack modifies a value in the table, the new value is invisible to Bill. Which is the modified value invisible to Bill?（）
- A、The modified data are not available on disk.
- B、The modified data have been flushed out from memory.
- C、The modified rows of the SupportCenter STAFF table have been locked.
- D、Jack has not committed the changes after modifying the value.
- E、Both users are accessing the database from two different machines.
正确答案:D -
第9题：
单选题If the over tax returns fails to effectively control, there will be penalties in the case of _____.Afilling the payroll tax bill later than expected
Bfilling the payroll tax bill in wrong form
Cboth A and B
Dboth tardy and wrong filing
正确答案： A解析：
最后一段中提到对退税表单的管理问题，提到了两种被罚款的情况。但是在这里filling和filing是不同的概念，分别是“填表”和“归档”的意思，容易产生眼误。 -
第10题：
单选题In case of inconsistency between this bill of lading and the applicable tariff，this bill of lading shall（）.Aprevail
Bprovide
Capply
Dsupply
正确答案： D解析： 暂无解析 -
第11题：
单选题According to the passage, which of the following statements is TRUE?AAfter the cell-phone ban is ended, students can use their phones during class.
BThe cell-phone ban is equally enforced in all public schools.
CThe cell-phone ban was put into place in 2008 under mayor Bill de Blasio.
DA phone-storage industry has appeared outside the 88 metal-detector campuses.
正确答案： B解析：
根据第四段第二句“Ending the ban will also likely end an industry that has sprung up near…other devices for a dollar a day”可知，众多学校周边曾经兴起一桩生意：为青少年保存手机和其他设备，费用为一天一美元。又根据文中第三段第一句“But at the 88 city schools with metal detectors”可知是88所具有金属探测器的学校，因此可判断正确答案为D。根据文章最后一句话“It will include rules about not using the phones during class or to cheat on tests”可知，上课或考试时使用手机是不允许的，A项错误。根据文章首句“which is not equally enforced in all schools”可以判断，B项错误。根据文章第四段首句“The ban was put into place in 2007 under mayor Michael Bloomberg”可知，该禁令是2007年Michael Bloomberg实施的，因此可以判断C项错误。 -
第12题：
单选题In no case（）to function as a document of title.Aa bill of lading does not fail
Bdoes not a bill of lading fail
Cdoes a bill of lading fail
Da bill of lading does fail
正确答案： C解析： 暂无解析 -
第13题：
听力原文：W: Excuse me, sir. Can you tell me what kind of a bill you have?
M: Yes, it's a ninety-day bill for $ 6,750.00. It matures about two months from now. I didn't think we'd have to discount it, but I need the working capital right now. How do I discount it?
Q: What kind of bill does the man have?
(13)
A．A bill of exchange with a 90-day maturity for $ 6,075.00.
B．A bill of exchange with a 60-day maturity for $ 6,075.00.
C．A bill of exchange with a 90-day maturity for $ 6,750.00.
D．A bill of exchange with a 60-day maturity for $ 6,750.00.
正确答案：D
解析：根据男士的回答，他持有一张金额为6，750.00美元的两个月到期的远期汇票。两个月是60天，因此选C。 -
第14题：
According to the passage, which of the following statements is TRUE?()A.After the cell-phone ban is ended, students can use their phones during class
B.The cell-phone ban is equally enforced in all public schools
C.A phone-storage industry has appeared outside the 88 metal-detector campuses
答案：A
-
第15题：
In no case ______ to function as a document of title．
A.a bill of lading does not fail
B.does not a bill of lading fail
C.does a bill of lading fail
D.a bill of lading does fail
正确答案：C
-
第16题：
共用题干
第二篇
Cell Phones : Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about
the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He
couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk
on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family
doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.People buy cell phones for the following reasons EXCEPT that_________.
A:they're popular
B:they're useful
C:they're cheap
D:they're convenient答案：C解析：由第一段第三句“cell phones are very popular”可知A项正确。由最后一段第四句“very useful and convenient”可知，B、D两项正确。故选C。
根据语境可知detect的意思是“发现，查明”。故选C。
由第三段可知那位销售员是因为严重的记忆问题而退休的，他连简单的任务都记不 住，故选D。
由第四段最后一句可知，移动公司承认手机有一些辐射，但他们认为辐射的量很小，无 需担心。
由文章最后一句可知，作者建议大家尽量少使用手机。 第三篇 本篇文章讲述了对杭微生物的杭力应引起注意。 -
第17题：
The mobility of cell phones means you can be anywhere and have the____or should I say the convenience, of a phone.A.must
B.accompaniment
C.conclusion
D.necessity答案：D解析：本题考查词语意思。题目意为“手机的移动性意味着你可以在任何地方，并且具有必要性，或者我应该说，手机的方便性。”A项意为“绝对必要的事物”。B项意为“伴奏、伴随物”。C项意为“结论、论断”。D项意为“必需品，必要”。因此选D项，有必要。
-
第18题：
共用题干
Cell Phones
I Believe it or not,cell phones have been around for over a quarter of a century.The first commercial
cell phone systemfl was developed by the Japancoc in I 979.But cell phones have changed a lot
since that
time.The early cell phones were big and heavy but they have developed into small and light palm-sized mod-
els.There have been huge (lcveloprnents in their functions,too;we have had call forwarding,text messaging,
answering services and hands-free use for years,but now there are countless new facilities,su,ch as instant ac-
cess to the Internet and receiving and sending photos.
2 Cell phones have become very common in our lives;recent statistics suggest as many as one in three
people cii the planet now have a cell phone,and most of them say they couldn't live without one.Cell phones
are used in every area of our lives and have become a necessary tool,used for essential arrangements,social
contact and business.They have made it easier to call for help on the highway.They have made it possible to
keep in touch with people"on the move”一when people are traveling.
3 Cell phones have made communication easier and have reduced the need for family arguments.We
can use cell phones to let our family know we'11 be late or if there’。a sudden change of tian or an emergen-
cy.Cell phones have eased the worries of millions of parents when their teenagers are out late,they can now
contact their children at any time.
4 This does not mean that cell phones are all good news.They have brought with them a number of
new headaches for their owners;it costs a lot to replace stolen phones,something that is becoming a frequent
occurrence,and have you ever seen such huge phone bills? More serious,however,is the potential health
problem they bring:there are fears that radiation from the phones may cause brain tumor（肿瘤）.This may be
a time bomb waiting to happen to younger people who have grown up with cell phones that they simply can't
live without!Cell phones are common in our lives and have become_________.
A:a necessity
B:an emergency
C:a number of new hcadaches
D:family arguments
F:big and light palm-sized models
F:countless new facilities答案：A解析：第一段开篇就说从手机发明到现在已过去了四分之一多个世纪，又对比了手机早期和 近期在功能一上的不同，由此可知是在叙述手机的历史。
第二段讲手机在人们的生活中十分常见，许多人离不开手机，手机用于各个场合，因而 意在说明手机存在于日常生活中。
第三段列举了手机对于家人联系上的作用，有助于减少家庭的误会纠纷，有助于父母 联系孩子，因而讲的是手机同家庭的关系。
最后一段第一句就说明了该段要讲的是手机带来的问题，段中虽举了青少年的例子，但 不局限于描写青少年，因此选F。
根据第一段末尾可知答案。
根据第二段第三行可知答案。
根据第三段第二句可知答案。
根据第四段第二句可知答案。第4部分；阅读理解第一篇 本文主要介绍了北极冰川融化的情况、原因和科学家们的担心。 -
第19题：
共用题干
Cell Phones
I Believe it or not,cell phones have been around for over a quarter of a century.The first commercial
cell phone systemfl was developed by the Japancoc in I 979.But cell phones have changed a lot
since that
time.The early cell phones were big and heavy but they have developed into small and light palm-sized mod-
els.There have been huge (lcveloprnents in their functions,too;we have had call forwarding,text messaging,
answering services and hands-free use for years,but now there are countless new facilities,su,ch as instant ac-
cess to the Internet and receiving and sending photos.
2 Cell phones have become very common in our lives;recent statistics suggest as many as one in three
people cii the planet now have a cell phone,and most of them say they couldn't live without one.Cell phones
are used in every area of our lives and have become a necessary tool,used for essential arrangements,social
contact and business.They have made it easier to call for help on the highway.They have made it possible to
keep in touch with people"on the move”一when people are traveling.
3 Cell phones have made communication easier and have reduced the need for family arguments.We
can use cell phones to let our family know we'11 be late or if there’。a sudden change of tian or an emergen-
cy.Cell phones have eased the worries of millions of parents when their teenagers are out late,they can now
contact their children at any time.
4 This does not mean that cell phones are all good news.They have brought with them a number of
new headaches for their owners;it costs a lot to replace stolen phones,something that is becoming a frequent
occurrence,and have you ever seen such huge phone bills? More serious,however,is the potential health
problem they bring:there are fears that radiation from the phones may cause brain tumor（肿瘤）.This may be
a time bomb waiting to happen to younger people who have grown up with cell phones that they simply can't
live without!We can use cell phones to communicate with others when we encounter__________.
A:a necessity
B:an emergency
C:a number of new hcadaches
D:family arguments
F:big and light palm-sized models
F:countless new facilities答案：B解析：第一段开篇就说从手机发明到现在已过去了四分之一多个世纪，又对比了手机早期和 近期在功能一上的不同，由此可知是在叙述手机的历史。
第二段讲手机在人们的生活中十分常见，许多人离不开手机，手机用于各个场合，因而 意在说明手机存在于日常生活中。
第三段列举了手机对于家人联系上的作用，有助于减少家庭的误会纠纷，有助于父母 联系孩子，因而讲的是手机同家庭的关系。
最后一段第一句就说明了该段要讲的是手机带来的问题，段中虽举了青少年的例子，但 不局限于描写青少年，因此选F。
根据第一段末尾可知答案。
根据第二段第三行可知答案。
根据第三段第二句可知答案。
根据第四段第二句可知答案。第4部分；阅读理解第一篇 本文主要介绍了北极冰川融化的情况、原因和科学家们的担心。 -
第20题：
单选题After three hours of heated debate, the（）bill was passed by a narrow majority .Avirtual
Buniversal
Ccontroversial
Dsubstantial
正确答案： B解析： 暂无解析 -
第21题：
填空题It has been found that the adventurer “Swiftwater” Bill Gates had greatly influenced Jack London’s books.____正确答案： H解析：
根据题干中“‘Swiftwater’ Bill Gates”可定位到H段。本段讲到，Jack London也加入了淘金热之中，他的书深受其北方经历和Bill Gates的影响，故匹配段落为H段。 -
第22题：
单选题Two database users, Jack and Bill, are accessing the SupportCenter STAFF table of the SupportCenter DB database. When Jack modifies a value in the table, the new value is invisible to Bill. Which is the modified value invisible to Bill?（）AThe modified data are not available on disk.
BThe modified data have been flushed out from memory.
CThe modified rows of the SupportCenter STAFF table have been locked.
DJack has not committed the changes after modifying the value.
EBoth users are accessing the database from two different machines.
正确答案： C解析： 暂无解析 -
第23题：
单选题We learn that Bill Clinton’s father ______ .Adied before Bill Clinton was born
Bdied when Bill Clinton was a few months old
Cleft his wife after Bill Clinton was born
Dwas his mother’s second husband
正确答案： C解析：
事实细节的找寻和判断。题干中Bill Clinton’s father为关键词，从而定位到录音中的“His mother named him for his father, who had been killed in a car accident a few months earlier.”，可知，在比尔·克林顿出生的前几个月，他的父亲就因出车祸而过世了。因此A项为正确答案。
【录音原文】
President Clinton was born in the little southern town of Hope, Arkansas, on August 19, 1946. But his name was not Bill Clinton. It was William Jefferson Blythe. His mother named him for his father, who had been killed in a car accident a few months earlier. When Bill was four years old, his mother married Roger Clinton who then legally became Bill’s father. Roger Clinton and Bill’s mother had a son, Roger Jr. -
第24题：
单选题Bill can inspect a case of cell phones in 6 hours. Jack can inspect the same case of cell Phones in 4 hours. After working alone for l hour, Bill stops for lunch. After taking a 30-minute lunch break. Bill and Jack work together to inspect the remaining cell phones. How long do Bill and Jack work together to complete the job?A1 hr. and l2 min
B1 hr. and 24 min
C2 hrs
D2 hrs and lo min
E2 hrs and 20 min
正确答案： E解析：
If x represents the number of hours Bill and Jack work together, then the total number of Bill’s working hours is x+1. Bill’s rate of work is 1/6 of the job per hour, and the Jack’s rate of work is 1/4 of the job per hour. Hence, (x+1)/6+x/4=1. x=2.