Travel agencies.
Space tours.
Holiday plans.
Earth’s orbit.
第1题:
A、with
B、at
C、for
D、in
第2题:
_________ from space, the earth looks like a blue ball.
A、Seeing
B、Seen
C、To see
D、See
第3题:
Radiation is the greatest known danger to explorers in _________
[A] earth
[B] atmosphere
[C] space
[D] environment
是完型填空吧?你要把整篇都传上来这样片面的截句无法给出答案。
第4题:
第5题:
第6题:
to consider
which considers
considers
the consideration of
第7题:
Travel agencies.
Space tours.
Holiday plans.
Earth’s orbit.
第8题:
a separator
oil
water
an oil collecting space
第9题:
To poke fun at the ignorance of most science fiction readers
To introduce a daunting challenge that will have to be addressed before human interstellar space travel can become possible
To draw a comparison between the attempts of humans to voyage in space and the more successful attempts of other civilizations
To draw an amusing distinction between a supposed danger of space travel, as presented in the popular media, and the actual challenges posed by interstellar space travel, as perceived by scienfists
To suggest that the concept of human interstellar space travel is as much of a myth as the “Little Green Men” that appears in science fiction movies and television programs
第10题:
第11题:
第12题:
Going Boldly Where No One Has Gone Before: The Promise and Peril of Interstellar Space Travel
The Day The Earth Stood Still: Why Interstellar Space Travel Is Essential to Human Survival
The Wrath of Larson: Egbert Larson’s Quest to Build an Interstellar Spacecraft
Busted Flat in Beta Regulus: The Crushing Challenges of Interstellar Space Travel
Say It Isn’t So, Mr. Einstein: Egberr Larson’s Challenge to the Theory of Relativity
第13题:
A. disturb
B. tremble
C. endure
D. operate
第14题:
– What’s your plan for summer holiday? -- _____________.
A、No plan.
B、I like traveling.
C、I’m going to travel around China.
D、I’d like to travel.
第15题:
第16题:
第17题:
第18题:
lack of capacity of space exploration vehicles.
the financial expenditure involved in space travel.
controversial nature of space travel.
the uncertain future of space exploration.
第19题:
to consider
which considers
considers
the consideration of
第20题:
satellite network
Satellite Link
INMARSAT
Satellite System
第21题:
we should not worry about the transition of the Earth’s magnetic field
the Earth’s magnetic field will not change for at least 2000 years
the Earth’s magnetic field has decreased its strength rapidly
the transition of the Earth’s magnetic field can be controlled by modern science
第22题:
Seeing
To be seen
Seen
Having seen
第23题:
Seeing
To be seen
Seen
Having seen
第24题:
the flows of melted iron inside the Earth
the periodical movement of the Earth
the mechanical energy of the solar system
the force coming from outer space