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【单选题】
i是虚数单位，复数 7+i 1-i 的共轭复数是（ ）A.
4-3i
B.
4+4i
C.
3+3i
D.
3+4i
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举一反三
【单选题】听力原文：It's too late to correct those mistakes the book has already gone to press． What can be said about the book?
A.
The book is already printed.
B.
A press conference is already held for it.
C.
All the mistakes in it have already been corrected.
D.
There are too many mistakes in the book.
【单选题】Launch schedule 24/5 - Press conference. 31/5 - TV advertising starts. Distribute posters. 7/6 - Deliver leaflets. Radio advertising starts. 14/6 - Free competition starts on the radio. How many writt...
A.
two
B.
three
C.
four
【简答题】古典音 乐 的 爱 好者 说 服了 国会实 行每 张门 票 40 美元的价格上限, 这 种政策使听古典音 乐会 的人多了 还 是少了 ?
【单选题】听力原文： Visitors to Britain sometimes are surprised to learn that newspapers there have such a large circulation. The Daily Mirror and the Daily Express both sell about four million copies every day. Ap...
A.
Large circulation of newspapers in Britain.
B.
National newspapers in Britain.
C.
Local Newspapers in Britain.
D.
Difference between national newspapers and local newspapers in Britain.
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