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第1题

This missile is designed so that once_____ nothing can be done to retrieve it. A. fired B. being fired C. they fired
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第2题

It was not until midnight the snow-capped peak. A. that they sighted B. that they did not sight C. did they sight D.
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第3题

12、 设{Tk(X)} 为切比雪夫多项式,则 ( )。 A. 0 B.π/4 C.π/2 D.π
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第4题

Since most people would’t like to buy an apartment far away from the city, there are a lot of apartments in this town.
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