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抽样推断时为什么必须遵循随机原则抽取样本?
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第1题
A.However hard did I try
B.However hard I tried
C.However I tried har
D.However I had tried hard
第2题
听力原文:W: Mr. Brown, I tried to memorize the script. but I keep forgetting the lines.
M: Look, Mary, you'll be fine if you stop putting so much pressure on yourself.
What's the man's attitude towards the woman?
A.Mary is not so forgetful.
B.Mary used to have good memory.
C.Mary shouldn't be so nervous.
D.Mary shouldn't try to memorize the whole script.
第3题
A.collect
B.recollect
C.remind
D.memorize
第4题
听力原文:W: Mr. Brown, I tried to memorize the script. but I keep forgetting the lines.
M: Look, Cathy, you'll be fine if you stop putting so much pressure on yourself.
Q: What does the man mean?
(18)
A.Cathy is not so forgetful.
B.Cathy used to have a good memory.
C.Cathy should not try to memorize the whole script.
D.Cathy shouldn't be so nervous.
第5题
him see the important of it.
(A) if only I could not (B) no more than I could (C) or I could not (D) nor could I
第6题
I could not persuade him to accept it, _____ the important of it.
(A) if only I could not (B) no more than I could (C) or I could not (D) nor could I
第7题
I could not persuade him to accept it,______ make him see the importance of it.
A.if only I could not
B.no more than I could
C.or I could not
D.nor could I
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