2017届高考英语一轮总复习单元精选测试系列资料(十三)
Ⅰ.语法填空
Scientists have 1 studying the complex nature of light for thousands of years. 2 was only this century, however, that they unlocked the secrets of this mysterious force. Now that light is more fully 3 (understand),researchers are searching for ways to put this power 4 work. The most significant invention to come out of this research is,no doubt, the laser.
5 the laser was invented only twenty years ago, its applications are continually growing, in number as 6
as in importance. Today one can find laser in hospitals, factories and 7 in the grocery stores. They are the heart of new weapon systems and they might be the key 8 a new energy supply.
Eye doctors are 9 important use of new laser technology. If diseased tissue is found, a 10 (power)laser can be used to burn it away .
语篇解读:该文章主要是介绍激光的发明和应用。
1.解析:have been studying一直在研究该结构是现在完成进行时。
答案:been
2.解析:It be...that...是强调句型。
答案:It
3.解析:考查的是过去式。
答案:understood
4. 解析:put this...to work利用这个力量。
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