课时作业(二十) 必修4 Module 2 Traffic Jam

Ⅰ.单项填空

1. —Look at that big dog over there!

—________！Just walk on quietly and it will ignore US. A．Keep cool C．Go ahead

B．You can’t be serious D．No way

2．(2012·陕西卷)I________thank you too much for all your help to my son while we were away from home.

A．won’t C．can

B．can’t D．will

3．The snow lasted a week，________a serious traffic confusion in the whole area.

A．caused C．to cause

B．causing D．cause

4．I ride a bicycle to go to work every day and have a deep impression that the bicycle is very ________in our daily life.

A．convenient C．possible

B．available D．personal

5．(2013·龙岩毕业班质检)Anyone who wants to go rafting this weekend，raise your hands please，________？

A．doesn’t he C．do you

B．will you D．don’t they

6．Don’t you think that’s a good sort of software________of being downloaded to help with your English?

A．worth C．worthwhile

B．worthy D．worthless

7．(山东高考)I have a lot of readings________before the end of this term. A．completing C．completed

B．to complete D．being completed

8．The new bill would________workers two weeks of unpaid leave for family emergencies.

A．provide C．admit

B．supply D．permit

9．________in the heavy snow，we could do nothing but wait for the rescue team. A．To be stuck

B．Stuck

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C．Having stuck D．To stick

10．—We need to keep working and find a solution as soon as possible________the problem.

—I couldn’t agree with you more. A．to C．on

B．in D．with

11．—What’s your impression of the city?

—The streets are becoming less crowded.________，the quality of the air has improved a lot.

A．As a consequence C．In other words

B．What’s more D．To start with

12．—When can I use your computer? —Never！________should you touch it. A．In no time C．At any time

B．At no time D．At one time

13．We are glad to see that consumers have been ________well to our new product since it came onto the market last week.

A．reacting C．adjusting

B．devoting D．attaching

14．After working all day，he was so tired that he was in no________to go to the party with us.

A．taste C．sense

B．mood D．emotion

15．—Mum，shall I go out to play with Tom now? —________You must finish your homework first. A．Hurry up! C．No way! Ⅱ.阅读理解

A

(2013·苏锡常镇四市二调)

Research shows that childhood friendships are important indicators of future success and social adjustment.Children’s relationships with peers (同龄人) strongly influence their success in school，and children with fewer friends are more at risk of dropping out of school，becoming depressed and other problems.

Making and Keeping Friends Is More than Child’s Play

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B．Take your time. D．It doesn’t matter.

When 6-year-old Rachel returned to school on a recent Monday morning，her eyes immediately scanned the playground for her friend Abbie.“Though they were only separated by a weekend，the girls ran right into each other’s arms and hugged，”recalls Rachel’s mother Kathryn Willis of Gilbert.“It was like a scene from a movie.”

Most parents instinctively (本能地) know that having friends is good for their child.Experts agree that friendship is not simply child’s play，but a powerful predictor of social adjustment throughout life.

A Skill for Life

“Childhood friendships serve as a very important training ground for adulthood，” says Dr.Robbie Adler-Tapia，psychologist with the Center for Children’s Health & Life Development at the East Valley Family Resource Center.

Researcher William Hartup states，“Peer relations contribute significantly to both social and cognitive (认知的) development.” Hartup concludes that the single best childhood predictor of adult social adaptation is not school grades or classroom behavior，but rather，how well a child gets along with other children.

The work of Arizona State University professor of Developmental Psychology Gary Ladd proves that just as being able to make and keep friends is beneficial to kids，so is the lack of friends detrimental.

Good Friendships Don’t Just Happen

Experts agree that it is essential for children to establish high-quality friendships.But，researchers warn，these friendships don’t necessarily just happen.Often，a good friendship begins with involved parents.

Psychologist Dr.Lynne Kenney Markan believes kids should be taught social skills in much the same way they are taught math and reading.

Bad Company

Many parents worry about the quality as well as the quantity of their child’s friendships.“When she was in 1st grade，her supposed ‘best friend’ began calling her names and threatening to hurt her，” says Mindy Miller.“My daughter wasn’t allowed to talk to or even look at other girls in her class.It really crushed her spirit.I told my daughter she didn’t need a ‘friend’ like that.”

“I’ll bend over backwards to help my son get together with a friend I think is good for him，” Adler-Tapia says.“I don’t look at it as manipulation (操纵)，just positive parental involvement.”

1．The example of Rachel and Abbie is used to illustrate that________.

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A．childhood friendship is of great significance to their growth

B．a positive friendship helps children solve emotional and physical problems C．it is a proven fact that peer friendship is the most rewarding experience throughout life

D．Rachel missed her friend Abbie very much because of their separation of one weekend

2．The underlined word “detrimental” could be replaced by________. A．aggressive

C．ridiculous

D．harmful B．disappointing

3．We can learn from the passage that high-quality friendship most probably results from________.

A．social skills and good study habits B．school grades and classroom behaviors C．academic success and social adaptation

D．positive parental involvement and social skills

4．From the last paragraph we can conclude that Dr.Robbie Adler-Tapia agrees that________.

A．parents should regard making friends as something that just happens B．it’s wise for parents to support and encourage healthy peer relationships C．parents only need to help their children to cope with difficult social situations

D．parents are supposed to encourage their children to make as many friends as they can

B

(2013·合肥一模)

Can people change their skin color without suffering like pop king Michael Jackson？Perhaps yes.Scientists have found the gene that determines skin color.

The gene comes in two versions，one of which is found in 99 per cent of Europeans.The other is found in 93 to 100 per cent of Africans，researchers at the Pennsylvania State University report in the latest issue of Science.

Scientists have changed the color of a dark-striped zebrafish (斑马鱼) to gold by inserting a version of the pigment (色素) gene into a young fish.As with humans，the skin color of zebrafish is determined by pigment cells，which contain melanin (黑色素)．The number，size and darkness of melanin per pigment cell determine skin

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color.

It appears that，like the golden zebrafish，light-skinned Europeans also have a mutation (变异) in the gene for melanin production.This results in less pigmented skin.

However，Keith Cheng，leader of the research team，points out that the mutation is different in human and zebrafish genes.

Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun，which can cause skin cancer.

But when modern humans leave Africa to live in northern latitudes，they need more sunlight on their skin to produce vitamin D．So the related gene changes，according to Cheng.

Asians have the same version of the gene as Africans，so they probably acquired their light skin through the action of some other gene that affects skin color，said Cheng.

The new discovery could lead to medical treatments for skin cancer.It also could lead to research into ways to change skin color without damaging it like chemical treatment did on Michael Jackson.

5．Scientists have done an experiment on a dark-striped zebrafish in order to________.

A．find the genes that are different from humans’

B．prove the skin color of zebrafish is determined by the pigment gene C．find out the reason why Africans’ skin color is dark D．find out the ways to change people’s skin color 6．The passage mainly tells us that________.

A．scientists have found out the gene that determines people’s skin color B．the new discovery could lead to research into ways to change skin color safely C．pop king Michael Jackson often changed his skin color as he liked D．people cannot change their skin color without any pain

7．The reason why Europeans are light-skinned is probably that________. A．they are born light-skinned people

B．light-skinned Europeans have mutation in the gene for melanin production C．they have fewer activities outside

D．they pay much attention to protecting their skin 8．The writer’s attitude towards the discovery is________. A．neutral

B．negative

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