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问题 多选题
某人骑车向正东方向行驶，看到插在车上的小旗向正南方向飘动，假设风速保持不变，骑车人沿正南方向行驶时，小旗的飘动方向可能的是（　　）

A．正东方向

B．正北方向

C．东偏南方向

D．东偏北方向

答案

ACD

填空题
用方框中所给单词的适当形式填空。
force   develop   separate   regret   success

1. The children have ____ the good apples from the bad ones.
2. China sent up Tiangong-1 into space _____ on September 29th.
3. Mr. Brown was _____ to leave his hometown to make more money.
4. My sister ____ buying the short skirt because she thinks it's too short.
5. With the ____ of modem medicine, we can cure most of the eye problems.

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选择题

We want to know ______ Mrs Black will come back this week. [ ]

A. if

B. that

C. because

D. since

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