1.(2019·常熟中学调研)While mobile phones are thought to double the risk of developing brain cancer, many businesses have made claims________the safety of their products.
A.in need of B.in defense of
C.in search of D.in view of
B 解析:句意:尽管手机被认为使患脑癌的风险翻番,许多企业已经发表声明来保护他们产品的安全性。in need of需要; in defense of保护; in search of寻找; in view of考虑到。
2.Knowledge and learning are important if we want to be successful, but they may also ________ our thinking.
A.direct B.limit
C.change D.improve
B 解析:考查动词词义辨析。句意:如果我们要想成功,知识和学问是重要的,但是它们可能也限制了我们的思维。direct指引,指导; limit限制; change改变; improve提高。根据句意可知选B。
3.(天津卷)You are working too hard.You’d better keep a ________ between work and relaxation.
A.promise B.lead
C.balance D.diary
C 解析:考查名词辨析。句意:你工作太努力了。你最好在工作和放松之间保持平衡。promise诺言; lead领先; balance平衡; diary日记。keep a balance为固定短语, 意为“保持平衡”, 符合句意, 故选C。