Ⅰ.单项填空
1．(2016·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翻， 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。
