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【单选题】
抽样的方式分为A.
随机抽样和非随机抽样
B.
分类抽样和分门抽样
C.
定量抽样和定性抽样
D.
固定抽样和非固定抽样
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举一反三
【单选题】3) Why was Lisa's condition unusual?
A.
He died but his body hasn't been found yet.
B.
Because no one else had this condition.
C.
Because doctors didn't know what caused it.
D.
Because the accent would stay with her forever.
【单选题】He turned around, but he couldn’t see ______. [ ]
A.
something unusual
B.
anything unusual
C.
unusual anything
D.
unusual something
【单选题】Why doesn't the suit fit the man?
A.
He is too short.
B.
He is too tall.
C.
He is unusual.
【单选题】新的《中华人民共和国食品安全法》从( )起施行
A.
2015 年 1 月 1 日
B.
2015 年 5 月 1 日
C.
2015 年 6 月 1 日
D.
2015 年 10 月 1 日
【简答题】Why was the bike unusual? Because its wheels were of ______.
【单选题】Why does the speaker say that Kelvin was an unusual teacher at Glasgow University?
A.
Because he was a proud and distinguished professor there.
B.
Because he used unusual ways to help his teaching.
C.
Because other people couldn’t understand his behavior.
D.
Because he didn’t associate with his colleagues.
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