2019届人教版高考一轮英语：必修5-unit 2 课时训练【22】(含答案)

2019

课时训练(二十二)

Ⅰ.阅读理解

A

Research has long backed the therapeutic(治疗的) value of diary­keeping for teenage girls and boys.But according to a new study，when teenagers detail their sadness onto a blog，the therapeutic value is even greater.Blogging，it seems，can be good for you.

The study，published in the journal Psychological Services and conducted by Meyran Boniel­Nissim and Azy Barak，psychology professors at the University of Haifa，Israel，found the contact with an online community through a blog made it more effective in relieving(解除) the writer's social anxiety than a private diary would be.

To track teenagers' experiences with blogging，the researchers randomly surveyed high school students in Israel and selected 161 of them who exhibited some level of social anxiety or stress.The teenagers，who averaged 15 years old，said they had difficulty making new friends or relating to their existing friends.

The teenagers were divided into six groups.The first two groups were asked to blog about their social difficulties，with one group asked to open their posts to comments.The second two groups were asked to blog about whatever struck their adolescent fancy；again，with one group allowing comments.All four groups were told to write in their blogs at least twice a week.As a control，two more groups were told to keep either an old­fashioned print diary or to do nothing at all.

All of their blog records were then read through by four psychologists to determine the authors' relative social and emotional state.In all the groups，the greatest improvement in mood occurred among those bloggers who wrote about their problems and allowed commenters to respond.

Interestingly，t he commenters on the blogs were quite supportive.“The only kind of surprise we had was that almost all comments made by readers were very positive and constructive in trying to offer support for anxious bloggers，”Dr.Barak wrote in an e­mail.

1．Compared with the traditional diary，the main advantage of blogging is that you can________.

A．write almost anything in a blog

B．make complaints in a blog

C．keep in touch with others through your blog

D．improve your emotional state through your blog

2．The researchers surveyed the students in Israel in order to________.

A．make us believe that blogging is a must for teenagers

B．prove blogging is more effective in solving teens'

emotional problems

C．find out their social and emotional state and help them out

D．check if blogging can help improve teens' emotional state

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3．In the most improved group，the bloggers________.

A．wrote at most twice a week

B．told others whatever they wanted about themselves

C．communicated with readers about their troubles

D．made their social difficulties known to researchers only

4．The main idea of the last paragraph is that bloggers can________.

A．support anything they like

B．make new friends with anyone

C．turn to the psychology experts for help

D．receive beneficial messages from readers

B

Scientists may have found a way to reduce shortages of type O blood.Type O is the kind of blood that hospitals most often need.What the researchers are testing is an easier way to make type O blood out of other kinds of blood.

There are four main kinds of blood.Most people are born with one of these four：type A，type B，type AB or type O．Type O can be safely given to anyone.So it is commonly used when a person is injured or sick and has to have blood.

Type O is the most common blood group.But the supplies of it available in hospitals and blood banks are usually limited.This is because of high demand.Type O blood is used in emergencies when there is no time to identify the patient's blood type.

Giving A，B or AB to someone with a different blood type，including O，can cause a bad reaction by the person's defense system.Their immune system can reject the blood.This immune reaction can be deadly.

The differences among blood types are linked to whether or not red blood cells contain certain kinds of sugar molecules.These molecules are found on the surface of the cells.They are known as antigens(抗原)．These antigens are found with type A，B and AB blood but not with type O.

More than twenty­five years ago，scientists found that the antigens could be removed to create what they called universal­type cells.They could be removed with chemicals called enzymes(酶)．But large amounts of enzymes were required to make the change.

Doctor Henrik Clausen of the University of Copenhagen in Denmark led the study.The next step，he says，is to complete safety tests.The team is working with the American company ZymeQuest to test the new method.If it meets safety requirements and is not too costly，it could become a widely used life­saving tool to increase the supply of universal blood.

5．The new way scientists use to reduce shortages of type O blood is________.

A．to make type O blood out of other kinds of blood

B．to give birth to more babies with type O blood

C．to use other kinds of blood to replace type O blood

D．to appeal to more people to donate type O blood

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6．People have different kinds of blood types because________.

A．people's red blood cells contain different kinds of sugar molecules

B．the areas where people live have an influence on their blood types

C．they have different races，cultures and origins

D．they are born with different kinds of blood types

7．What can be inferred from the passage?

A．One person's antigens could easily be removed to an …… 此处隐藏：8586字，全部文档内容请下载后查看。喜欢就下载吧 ……