[优化方案]（陕西专用）高考英语总复习 课时作业四 Unit4 Earthquakes 新人教版必修1

Unit 4　Earthquakes

Ⅰ.单项填空

1．—My daughter came first in the English speech contest.

—Did she？________！

A．Cheer up　　　　　　　　　 B．Good luck

C．Best wishes D．Congratulations

2．Though we had never seen each other before，we talked________we had been friends for many years.

A．as if B．even though

C．because D．after

3．The car was not seriously________in the accident and it won’t cost much to get it repaired.

A．destroyed B．ruined

C．damaged D．suffered

4．Believe it or not，the ancient Chinese painting is worth more than________dollars!

A．two million B．two million of

C．two millions D．two millions of

5．________the end of last year，we had learned over 2,000 English words and phrases.

A．At B．In

C．By D．From

6．Hearing the old man’s________experiences in Africa，we all couldn’t help________laughing.

A．amused；bursting out

B．amusing；bursting into

C．amused；bursting into

D．amusing；bursting out

7．My cousin will________his chances of getting a pay rise if he doesn’t work harder this year.

A．injure B．wound

C．ruin D．harm

8．________from what he has been doing，Mr.Smith seems to be a person we can depend on.

A．Judge B．Judging

C．Judged D．To judge

9．Tom has become good friends with some of the volunteers in Guangzhou________he met in the Asian Games.

A．who B．where

C．when D．which

10．Mr.Black didn’t know the other guests at the party.Luckily，the hostess came to his________by introducing him to a few people.

A．sense B．attention

C．mind D．rescue

11．You must learn how to communicate with others.Learning to________yourself well is an important part of education.

A．express B．find

C．introduce D．recognize

12．Nowadays，people usually think if you enter a key university，you are your parents’________．

A．pride B．luck

C．value D．cheer

13．—I was riding along the street and all of a sudden，a car cut in and knocked me down.

—You can never be________careful in the street.

A．very B．too

C．so D．much

14．Having a chat with an old friend you haven’t seen for ten years is a pleasant thing，________I prefer very much.

A．it B．that

C．what D．one

15．Some parents are just too protective.They want to________their kids from every kind of danger，real or imagined.

A．spot B．dismiss

C．shelter D．distinguish

Ⅱ.完形填空

(2012·原创题)Autumn Leaves Show Their True Colors

As days grow shorter and nights grow cooler in Boulder，Colorado，the green leaves of summer have been putting on party colors.

Some do have their theories about the autumnal__1__of the color of the tree leaves.

“I’ve heard that the reason__2__the leaves change throughout the seasons is that God likes to see different colors all over the world，”says one girl，“so that he can__3__ what season it is.”

“__4__legend，”says a woman，“three hunters and their dog chased the Great Bear into the sky，slaughtered(屠杀)it and its blood __5__onto the leaves，turning them red.”

Dave Sutherland，a naturalist with Boulder Mountain Parks，__6__the explanation he heard in childhood.“My mom told me it was because at night，__7__everybody’s asleep the fairies come out and __8__ them.”

It turns out the scientific explanation for__9__ leaves change color is almost as magical as artistic fairies.

The story begins in summer，when leaves are green__10__a pigment(色素) known as chlorophyll(叶绿素)．It captures just the right color from the sun’s light，to power the__11__ known as photosynthesis(光合作用)．

“__12__the chlorophyll is grabbing that sunlight，it’s__13__ water from the soil and carbon dioxide from the air and energy from the sunlight and shoving it together to make sugar，” Sutherland says.