填空题

The invention of computers __________________ (为……打下基础)the rapid development of science and technology.

【参考答案】

(has) laid the foundation of
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单项选择题
A．becauseB．althoughC．afterD．while
A．because
B．although
C．after
D．while
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Professor Li gave a short speech at the conference, and his words __________________(深深铭刻在我的记忆中).
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