Question

語法填空

仔細閱讀下面的短文，短文中有10個空格，請按照短文意思填寫相應的詞，每空一詞。

　　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．

Answer 1

答案：
解析：

1．been　have been studying一直在研究　該結(jié)構(gòu)是現(xiàn)在完成進行時。 　　2．It　It be……that……是強調(diào)句型。 　　3．understood考查的是過去式 　　4．to　put this……to work利用這個力量 　　5．though　though the laser was invented only twenty years ago雖然激光在20年前才被發(fā)明，在這里表示轉(zhuǎn)折。 　　6．well　as well as固定結(jié)構(gòu) 　　7．even　even在這里表示更多的，更深的 　　8．to　the key to……的答案 　　9．making　make use of　make在這里要作動名詞。 　　10．powerful　形容詞做定語 　　該文章只要是介紹激光的發(fā)明和應用。