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【单选题】
当 x=-5 时,下列语句执行后 y 的值是多少? y=IIf(x>0,x^2+1,x-1)A.
0
B.
26
C.
-6
D.
4
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举一反三
【单选题】—Is Lucy knocking at the door? —No. It ______ be Lucy. She is in Japan now. [ ]
A.
needn't
B.
mustn't
C.
can't
D.
shouldn't
【简答题】Smoking is considered erous to the health. Our tobacco-seller Mr. Johnson, therefore, always asking his customers if they are very young, whom the cigarettes are bought 1 . One day, a little girl ...
【简答题】Under a CIF contract, the goods had been loaded on board the vessel according to the terms of the contract. Then the vessel departed. An hour later the vessel struck a rock and sank. The next day the ...
【简答题】A．Lucy King isn't at home right now. B．Lucy King doesn't want to answer the phone. C．Lucy King is busy now. D．The man got the wrong number.
【简答题】科氏加速度是由(____)运动与(____)运动相互影响产生的。
【单选题】The particular price that results in quantity supplied being equal to quantity demanded is the best price because it
A.
maximizes costs of the seller.
B.
maximizes tax revenue for the government.
C.
maximizes the combined welfare of buyers and sellers.
D.
minimizes the expenditure of buyers.
【单选题】We can’t afford ______ such an important customer. [ ]
A.
upset
B.
to upset
C.
upsetting
【简答题】科氏加速度是由(____)运动与(____)运动相互影响产生的。
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