11.Companies usually ____________________ a number of experiments before a new product is launched.

　　A.practice

　　B.control

　　C.carry

　　D.conduct

　　参考答案：D

　　12.I remembered that the air conditioners ____________________ turned off before I left home.

　　A.were

　　B.were to be

　　C.had been

　　D.have been

　　参考答案：C

　　13.--How do you like your new job?

　　--Well,it is great ____________________ salary,but it does not offer much prospects for promotion.

　　A.in charge of

　　B.in terms of

　　C.in case of

　　D.in favor of

　　参考答案：B

　　14.In my opinion this is a(an)____________________ different matter.

　　A.entirely

　　B.merely

　　C.purely

　　D.fully

　　参考答案：A

　　15.Take an umbrella with you in case it ____________________.

　　A.many rain

　　B.could rain

　　C.rained

　　D.rains

　　参考答案：D

　　16.The murderer was brought in,with his hands ____________________ behind his back.

　　A.to have been tied

　　B.having tied

　　C.to be tied

　　D.tied

　　参考答案：D

　　17.--Do you think Joshua is the right person for this job?

　　--He is well-grounded in economic theory,but lacks ____________________ in production management.

　　A.devotion

　　B.attitude

　　C.experience

　　D.energy

　　参考答案：C

　　18.____________________ about it earlier,we could have warned people of the danger.

　　A.Would we know

　　B.Should we know

　　C.Have we known

　　D.Had we known

　　参考答案：D

　　19.It was ____________________ of you not to disturb these old people late last night.

　　A.patient

　　B.considerate

　　C.deliberate

　　D.modest

　　参考答案：B

　　20.--Hey,what do you think of his speech last night?

　　--I have no idea.I arrived ____________________ find that he had almost finished it.

　　A.in order to

　　B.so as to

　　C.only to

　　D.ready to

　　参考答案：C