It is global warming, rather than other factors, ___the extreme weather.

 A. that have led to                          B .which has caused 

C. which are causing                        D. that has led to

By improving reading skills, you can read faster and understand more of ________you once thought impossible to understand.

A. that              B. what                C. which              D. whether

---I’m going to Beijing next week. Do you have anything ______to your son?

---No，thanks.

A. taken                B. to take               C. to be taken              D. take

James Cook was a strict captain, but ______all the sailors on the ship showed respect for.

A. that              B. the one                 C. who             D. one

Research findings show we spend about two hours dreaming every night, no matter what we     _________during the day.

A. may have done          B. could do         C. must have done          D. would do

____ the crisis of economy getting more and more serious, the government is searching for ways to improve people’s life.

A. As              B. With                 C. When               D. If

Not only did the Great Wall of China serve as a defense in the north but also______ the power of the emperor. 

A. symbolize             B. to symbolize            C. symbolizing              D. symbolized

---How do you find Johnson’s last party?

---Well, it couldn’t have been      . In fact, I won’t go to his party next time.

A. any better              B. any worse            C. so bad            D. the best

He doesn't spend any more money on clothing than I do, but ______ he manages to look so stylish.

A. therefore               B. somehow           C. furthermore           D. otherwise

--- I’ll have an interview for a position in that company, and now __________.

---Take it easy. You are well prepared for it, aren’t you?

A. No pains, no gains                   B. There is no smoke without fire

C. The world is my oyster                       D. I have butterflies in my stomach