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These achievements without the contribution of Qian Xuesen, a key leader of the

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These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．

A．would have been unthinkable B．would not be unthinkable
C．would be unthinkableD．would not have been unthinkable

试题答案

A

解析

标签：keyxuesenqianchinanew

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