网校每日一练免费在线测试系统将为所有学员免费提供练习题，所有学员登录成功之后即可免费练习。如有疑问可以到答疑板与专家进行交流，24小时之内即可得到满意答复。欢迎大家积极参与！

阅读理解：

The opportunity to escape the realities of everyday life is,I think,the main attraction of a bookshop.There are not many places where it is possible to do this.A music shop is very much like a bookshop.You can go to such places as much as you wish.If it is a good shop,no assistant will approach you with the greeting:"Can I help you,sir?"You needn't buy anything you don't want.In a bookshop,an assistant should remain in the background until you have finished reading.You may want to find out where a particular section is.Then,and only then,are his services necessary.But when he has led you there,the assistant should leave politely and look as if he is not interested in selling a single book.

An assistant in a bookshop helps you ______.

A.on your entering the shop

B.just before you finish reading

C.only when you want to find out where a particular section is

D.when you are reading

正确答案：C

答案解析：In a bookshop,an assistant should remain in the background until you have finished reading.You may want to find out where a particular section is.Then,and only then,are his services necessary.在书店里，店员只是在你想知道具体的书籍的位置时，他才会帮你。

相关推荐：

2015职称英语考试真题及答案解析汇总

2016年卫生类职称英语备考基础语法知识汇总一