1. My parents love me very much and I want to thank them from the ________ (底部) of my heart.

2. If you see ________ (垃圾) in the corridor, pick it up.

3. To protect the environment, most supermarkets in China stopped providing free ________ (塑料的) bags.

4. The city is the ________ (工业) center of the country.

5. I am afraid we can’t a______ (承担得起) to take a taxi. Let’s go by underground instead.

6. So far, no ________(science)studies have shown that shark fins are good for health.

7. Can you tell me the ________ (advantage) of using cloth bags?

8. There is a _______ (wood) table in the middle of the room.

9. There used to be many ______ (fisherman) in the village.

10. Greenhouse gases are________(harm) to the environment.

11. ________ is the opposite of beautiful.

A．Clever

B．Ugly

C．Nice

D．Kind

12. —Let's go hiking ________ staying at home，shall we?
—Good idea.

A．as well as	B．in order to
C．instead of	D．even though

13. Shopping bags shouldn't be thrown away. We should        them.

A．buy

B．borrow

C．reuse

D．repair

14. It’s necessary for the phubbers(低头族)to________the time they spend on their smart phones.

A．cut in

B．cut off

C．cut down

D．cut up

15. —Don’t throw rubbish out of the window. It is impolite.
—________

A．You’re welcome.

B．That’s all right.

C．Never mind.

D．Sorry, I won’t.

16. —Wow.your sweater is very beautiful! How much is it?
—Thank you. It ____ me 30 dollars.

A．spend

B．paid

C．cost

D．take

17. —Not only my friends but also I ________ interested in football.
—So you are so healthy!

A．be

B．am

C．is

D．are

18. To make rivers than before, everybody is supposed to protect them.

A．dirty

B．dirtier

C．clean

D．cleaner

19. Anyone who is good at singing can ________ the activity in our school.

A．take part in

B．take off

C．take out

D．take care of

20. —Why not ask Bob to join us in the trip to the zoo tomorrow?
—Everyone in our group loves animals, but he always seems                 .

A．anxious

B．personal

C．cruel

D．careless

21. 我们应该骑自行车或乘公共汽车来代替开车。
We should take the bike or bus ____________ driving.

22. 他们已经采取行动挽救野生动物了吗？
Have they ____________ to save wild animals yet?

23. 离开房间之前，请将你的电脑关闭。
Please ____________ your computer before leaving the room.

24. 每个人都应该在环保方面发挥作用。
Everyone should ________ ________ ________ ________ the environmental protection.

25. 这条小路通向公园。
The path ____________ the park.

Bike-sharing is a new choice for short journeys in cities. It is good to the _______development of the big cities.
     A _______ by a company found that shared bikes started the nation’s_______for bikes again. Now more and more Chinese people are _______bikes instead of cars to make short journeys in cities.
      An engineer of that company says that since the start of shared bikes, people_______fewer trips by car. The love for shared bikes is not only among _______ people, who were born in the 1980 s and 1990s, but also among people over sixty.
      At weekends, the number of the riders in Shenzhen reaches the _______of all cities. On weekdays, the number of people who use shared bikes to travel to work is_________in Shanghai.
      It is said that bike-sharing will help_______the cities’ environment. It not only helps solve the traffic problems, but also will help to make more use of________in cities. Take Beijing as an example if more people choose shared bikes, an area of five Bird’s Nest stadiums will be saved.26.

A．harmful

B．sudden

C．slow

D．healthy

27.

A．report

B．suggestion

C．rule

D．plan

28.

A．preparation

B．love

C．search

D．worry

29.

A．repairing

B．locking

C．choosing

D．pushing

30.

A．will made

B．have made

C．are making

D．are made

31.

A．strong

B．young

C．old

D．weak

32.

A．corner

B．line

C．top

D．side

33.

A．going up

B．giving away

C．coming over

D．putting off

34.

A．experience

B．improve

C．discover

D．separate

35.

A．space

B．money

C．air

D．time

The World Health Organization(世界卫生组织)says air pollution kills seven millionpeople around the world each year. Even if polluted air does not kill us, it can make us very sick.

However, breathing dirty air may do more than hurt your body. It can also affect (影响)your brain and your ability to think.

A new study shows that air pollution can cause a “huge” reduction(减少) in our intelligence(智商). The researchers reported that the long-term exposure(暴露)   to air pollution can affect a person’s mental(智力) abilities in two areas: language and math.

Xi Chen, the researcher of the Yale School of Public Health led the study. He and his team found that breathing polluted air can reduce a person’s education level by about one year.Chen said that the effect (结果)generally is worse for those over 64 years of age, especially for men and for those with little or no education.

“The older persons — they are more affected. And we find, quite interestingly, men are more affected than women. And people working outdoors are more affected than people working indoors.”

The researchers noted that the effect of pollution on language ability is even more serious as people age, especially among men and the less educated.

Why were language skills more affected than math? There are two main kinds of tissue(组织) in the brain: white matter and grey matter. White matter is more connected with a person’s language skills, while grey matter is connected to our ability to solve math problems. Studies have shown that air pollution has a great effect on the white matter in the brain, but not the grey matter.

Chen said that air pollution did affect the math skills, just not as much as their language skills.

36. Air pollution causes_______million people to die around the world each year.

A．one

B．two

C．seven

D．sixty-four

37. Which is not true according to the passage?

A．Breathing dirty air may hurt your body.

B．Breathing dirty air can affect your brain,

C．Breathing dirty air can affect your ability to think.

D．Breathing dirty air can make your immune system(免疫系统) strong.

38. The effect of breathing polluted air generally is worse for those people except __________.

A．men	B．women
C．those with little or no education	D．those over 64 years of age

39. In the sixth paragraph, “people working outdoors” probably refers to(指的是) “________”.

A．the researchers

B．people with little or no education

C．people from the World Health Organization

D．people from the Yale School of Public Health

40. Air pollution affected the language skills                 math skills.

A．as much as

B．as little as

C．more than

D．less than