按要求改写句子。

1. Would you like to play ping-pong? (肯定句)

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2. We can buy some runners. (否定句)

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3. I don't have a ball either. (肯定句)

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4. I think so. (否定句)

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5. I have a basketball. (将主语换为she)

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6. These are shorts. (就划线部分提问)

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对高层建筑的测量时为保证施工安全和测量数据的准确性，测量作业要求风力最大不超过（）。

A.3级

B.3.5级

C.4级

D.4.5级