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【单选题】
正三棱锥的2,侧棱长为4,则正三棱锥的底面边长为( )A.
5
B.
6
C.
7
D.
85.
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【单选题】Man: Isnt that a new brand of computer youre working at? Woman: Oh, Bill, this isnt the first time you asked me about it. Question: What does the woman imply?
A.
The man is a forgetful person.
B.
The computer is not new.
C.
The man can have the computer later.
D.
The man misunderstood her.
【简答题】If the rising money on health care isnt reduced, it is likely that the US may not maintain a productive economy.
【单选题】The function of the sentence 'A nice day, isnt it?' is______.
A.
informative
B.
phatic
C.
directive
D.
performative
【单选题】A: Do you think that our boss is a kind man? B: It is fine weather, isn't it? The above dialogue violates the principle of ______ of CP (Cooperative Principle).
A.
manner
B.
relation
C.
quality
D.
quantity
【单选题】Two weeks __________enough for us to finish this work, we need __________week.
A.
isnt, a third
B.
arent,the third
C.
isnt, the third
D.
arent, a third
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