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【判断题】
有理数域 Q 是 R(i) 的真子域, R(i) 是实数域 R 的真子域, 实数域 R 是复数域 C 的真子域.A.
正确
B.
错误
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举一反三
【单选题】Can you make sure _______ the gold ring?
A.
where Alice has put
B.
where had Alice put
C.
where Alice had put
D.
where has Alice put
【简答题】be good _____(对......有好处)
【单选题】How can a consumer make his or her complaint more effective, according to the passage?
A.
Explain exactly what is wrong with the item.
B.
Threaten to take the seller to court.
C.
Make polite and general statements about the problem.
D.
Avoid having direct contact with the store manager.
【简答题】The purpose of new technologies is to make life easier, not (make) _______ it more difficult.
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