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 unthinka 题目和参考答案——青夏教育精英家教网—

题目内容

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 unthinkable D．would not have been unthinkable

解析:

（本题考查虚拟语气。题干句子中“without the contribution of Qian Xuesen”表示与过去事实相反的虚拟语气，谓语动词要用“would（not）}lave done'’。）

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D. doesn’t come; will have

There are two kinds of physical activity which require special training. The first demands exact careful movements of the muscles. This kind of activity must be strictly controlled because even a slight movement in the wrong direction will lead a mistake. To type quickly, for example, a person needs training; the slightest movement of a finger in the wrong direction may cause a spelling mistake. A dancer who has to dance on the point of her shoes or turn around on one foot must be trained for a long period of time before she can sense her own center and balance herself. You may have seen a girl walking on a rope across an empty space, which, too, requires a lot of practice.

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The experiments done by some scientists showed that ________.

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改正下面短文中的错误。对标有题号的每一行作出判断：如无错误，在答题卡该行右边横线上画一个勾（√），请在有错误的地方增加、删除或修改某个单词。

注意：1.每处错误及其修改均仅限一词；

2.原行没有错的不要改。

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