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【简答题】
点P（3，-4）关于x轴对称的点P 1 的坐标是______，关于y轴对称的点P 2 的坐标是______．
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【简答题】It is a pleasure for me to invite you on behalf of the department of English to accept an appointment as visiting professor at the University of California, from January 10 to March 31,2011.The Univer...
【简答题】质量管理负责人和 不得互相兼任。
【单选题】We hope that you can buy this material because it_____ well.
A.
is washed
B.
is washing
C.
will be washed
D.
washes
【多选题】Since the market is [填空(1)] great need of your products, we hope that you can give us some discount [填空(2)] as to expand the potential market.
A.
in
B.
so
【简答题】We
hope that you can supply our order from stock.
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