Question

语法填空

仔细阅读下面的短文，短文中有10个空格，请按照短文意思填写相应的词，每空一词。

　　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　该结构是现在完成进行时。 　　2．It　It be……that……是强调句型。 　　3．understood考查的是过去式 　　4．to　put this……to work利用这个力量 　　5．though　though the laser was invented only twenty years ago虽然激光在20年前才被发明，在这里表示转折。 　　6．well　as well as固定结构 　　7．even　even在这里表示更多的，更深的 　　8．to　the key to……的答案 　　9．making　make use of　make在这里要作动名词。 　　10．powerful　形容词做定语 　　该文章只要是介绍激光的发明和应用。