单词拼写

1.She has one of the most _________(才华横溢的) minds in the country.

2.Scientists have made a major_______(突破) in the treatment of cancer.

3.Please help me to _______(计算) out my income tax.

4.They made use of ______(先进的) technology to send up a man-made satellites.

5.The stamp ______(附着) to the envelope is unique.

6.The surgeon _______(诊断) his illness as a rare bone disease.

7.During the most productive time in her _____(生涯), she wrote five novels.

8.Please tell me what happened in ______(简洁);I don’t go into the details.

9.Our main task now is increasing _____(产量)。

10.________(农业) plays an important part in our daily life.

11.The public should be ______(教育) in how to use energy more efficiently.

12.There was a woman lying _____(昏迷不醒的) on the floor.

13.Although we were busy, we accepted the _______(邀请) to the wedding.

14.She got into a ______(恐慌) when she couldn’t find the keys.

15.I hope our holiday will be ____(延长)

16.We asked for _______(平等)

17.He won a round of _______(掌声) when he ended his speech.

18.Some historians think the dreams of ancient peoples led to the development of _______(宗教)

19.I seem to have ________(使参与) myself in something I don’t understand.

20.The old man knows how to _____(交流) with dogs.

21.If it is ____(方便的) to you, I will call on you after work.

22.Because of the heavy traffic, I had to get to my ______(目的地) two hours before the lecture time.

23.Have you found a ______(解决方法) to your trouble?

24.Not many people agree with the government’s ________(预言) that he economy will be improved.

25.After some argument, Ruth was ________(最终) won over to our side.

Scientists have devised a way to determine roughly where a person has lived using a strand (缕) of hair, a technique that could help track the movements of criminal suspects or unidentified murder victims.

The method relies on measuring how chemical variations in drinking water show up in people’s hair.

“You’re what you eat and drink, and that’s recorded in your hair,” said Thure Cerling, a geologist at the University of Utah.

While U.S diet is relatively identical, water supplies vary. The differences result from weather patterns. The chemical composition of rainfall changes slightly as rain clouds move.

Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes (同位素). The heaviest rain falls first. As a result, storms that form over the Pacific deliver heavier water to California than to Utah.

Similar patterns exist throughout the U.S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline. Each inch of hair corresponds to about two months.

Cerling’s team collected tap water samples from 600 cities and constructed a map of the regional differences. They checked the accuracy of the map by testing 200 hair samples collected from 65 barber shops. They were able to accurately place the hair samples in broad regions roughly corresponding to the movement of rain systems.

“It’s not good for pinpointing(精确定位),” Cerling said. “It’s good for eliminating many possibilities.”

Todd Park, a local detective, said the method has helped him learn more about an unidentified woman whose skeleton was found near Great Salt Lake.

The woman was 5 feet tall. Police recovered 26 bones, a T-shirt and several strands of hair.

When Park heard about the research, he gave the hair samples to the researchers.

Chemical testing showed that over the two years before her death, she moved about every two months.

She stayed in the Northwest, although the test could not be more specific than somewhere between eastern Oregon and western Wyoming.

“It’s still a substantial area,” Park said “But it narrows it way down for me.”

1.What is the scientists’ new discovery?

A. One’s hair growth has to do with the amount of water they drink.

B. A person’s hair may reveal where they have lived.

C. Hair analysis accurately identifies criminal suspects.

D. The chemical composition of hair varies from person to person.

2.What does the author mean by “You’re what you eat and drink” (Line 1, Para.3)?

A. Food and drink affect one’s personality development.

B. Food and drink preferences vary with individuals.

C. Food and drink leave traces in one’s body tissues.

D. Food and drink are essential to one’s existence.

3.What did Cerling’s team produce in their research?

A. A map showing the regional differences of tap water.

B. A collection of hair samples from various barber shops.

C. A method to measure the amount of water in human hair.

D. A chart illustrating the movement of the rain system.

4.What is the practical value of Cerling’s research?

A. It helps analyze the quality of water in different regions.

B. It helps the police determine where a crime is committed.

C. It helps the police narrow down possibilities in detective work.

D. It helps identify the drinking habits of the person under investigation.

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

House Sitting

In many countries of the world people do what is called house sitting. It means that if owners of the house are going away, they want someone to come into their home and look after the house and maybe pets while they are away.

In Australia, many people travel. After people retire, they might buy a van and travel all over the country. 1.

So if someone wants to travel or go away for some reason, they might want someone in their home to care for it and keep the gardens tidy. House sitters might have to care for pets. Also, quite a few people have swimming pools in their back yard and they need cleaning. 2. I feel it is a great way of seeing the country, because you go and stay in a new city, get to meet new people, and have time to go sightseeing in a new area.

3. There are websites where you find the advertisements by people who want to travel, and by replying to the advertisement, you can make arrangements to go and look after their home.

There are some requirements to be a house sitter. You must be a trusted person, so that the home owner knows you will not steal anything. You must be able to go when the house owner wants you to go, so you need lots of free time. 4. You need to be good with pets, able to care for cats and dogs, or other pets they may have.

Some house sitting jobs are just for a few days or a couple of weeks while the house owners have a short holiday. Sometimes it is for much longer. We have had one house sit for six months, while the home owner travelled to Europe.

5. Then you can travel to many different countries and stay there. One of the important things to get is references from the home owners where you have stayed. A reference is a written letter to say that you are trustworthy and have looked after their home well. You can show these letters to possible house sitting jobs and they know you will do a good job.

A. I have done house sitting many times.

B. Thousands of people do this all the time.

C. It is also possible to do house sitting in other countries.

D. Generally you have many opportunities to get a house sitting job.

E. You must take a little care over what your description says about you.

F. This is an international house sitting service for all city and country areas.

G. You must have a good car, so you can travel to different parts of the country.

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