A. furthermore
B. however
C. therefore
D. thus
第1题:
17.
A.am
B.is
C.are
D.isn’t
第2题:
Playing on a frozen sports field sounds like a lot of fun. Isn’t it rather risky, ____?
A. though
B. also
C. either
D. too
第3题:
【单选题】如果模型yt=β0+β1xt+ut,()则说明不存在随机误差项自相关问题。
A.cov(xt,ut)=0
B.cov(us,ut)=0(t≠s)
C.cov(xt,ut)≠0
D.cov(us,ut)≠0(t≠s)
第4题:
There must be something wrong with my computer,()there?
A. mustn't
B. needn't
C. isn't
第5题:
【填空题】单位换算:(答案直接写整数,不要用科学计数法) 1us = ___________ ns 1ms = ___________ us 1s = ___________ ms 1s = ___________ us
第6题:
观看课程 《网络暴力的失控》https://www.bilibili.com/video/BV1us411U7B8?from=search&seid=11710198688403316830 延伸学习 《大数据挖掘与案例实战》 http://www.bilibili.com/video/BV1e7411s7du/?spm_id_from=333.788.videocard.5