答案　A

解析　句意为：我不确定几点能到，也许是7：30或8：00，不管怎样我会尽早到那里。anyway不管怎样；however然而；thus这样，因此；therefore因此，所以。

10．With China's Singles' Day approaching，shop owners offer large discounts ___________ high sales volumes created by enthusiastic buyers.

A．in expectation of B．in regard to

C．in terms of D．in response to

答案　A

解析　句意为：随着中国的"光棍节"的临近，店主们提供大的折扣，期望热情的买主们创造一个高销量。In expectation of期望；in regard to关于......；in terms of就......而言；in response to回应。

11．He speaks English well indeed，but of course not_________ a native speaker.

A．as fluent as B．more fluent than

C．so fluently as D．much fluently than

答案　C

解析　句意为：他的英语的确讲得好，但当然不如当地人讲得流利。在否定句中用not as/so...as..."不如......一样好"，因为修饰动词speak，故选C。

12．The flu is believed _______ by viruses that can reproduce in the cells inside the human nose and throat.

A．causing B．being caused

C．to be caused D．to have caused

答案　C

解析　Sth. Be believed to do sth. 为常用结构，由于cause和flu之间为动宾关系，故选C项。

13．-Jack can't concentrate on his lessons recently.

-Yes， that might_______ why he did so badly in the last test.

A．answer for B．apply for

C．account for D．call for

答案　C

解析　answer for符合，对......负责；apply for申请；account for说明......的原因；call for要求。答句句意为：是的，那也许能解释他最后一次测试做得如此差的原因。故选C。

14．The student _________writing down every data during his experiments.

A．used to B．get use to

C．is fond of D．is accustomed to

答案　D