语法与词汇
Many firms, for instance, have great difficulty in obtaining technical or scientific books from libraries because they are unwilling to have their names entered as having taken out such and such a book, for fear the agents of other firms _____ able to trace the kind of research they are likely to be undertaking.无
【正确答案】
A
【答案解析】连接词“for fear that” 可以用来引导虚拟语气。 其形式通常为： “for fear that +主语+ should +动词原形” ， 句中的should可以省去。