You will recognize Jane when you see her at the airport. She a large blue bag.A. carries B. is carryingC. will be carrying D. has carried 题目和参考答案——青夏教育精英家教网—

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You will recognize Jane when you see her at the airport. She _____ a large blue bag.

A. carries B. is carrying

C. will be carrying D. has carried

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—How did you find your missing key?

— .

A. I found it in my drawer

B. Quite by accident

C. It was well kept by the monitor

D. I had no idea where it was

Can eating a chocolate bar every day really prevent age-related memory loss? No. But a new research shows that large amounts of flavones, substances found in cocoa, tea and some kinds of vegetables, may improve age-related memory failure.

Dr. Scott Small is a professor of neurology at Columbia University in new York City He is the lead writer of a research paper describing the effects of cocoa flavones on brain activity His study involved 37 volunteers aged between 50 and 69. Researchers gave them a high-level flavones drink made from cocoa beans or a low-level flavones drink. For a period of three months, some subjects got 900 milligrams of flavones a day. The others got 10 milligrams of flavones each day. Brain imaging and memory tests were given to each study subject before and after the study Dr. Small says that the subjects who had the high-level flavones drink showed much improvement on memorytests.

The researchers warn that more work is needed to be done because this study was performed only on a small group. Dr. Joann Manson is the lead researcher of a four .year study involving 18,000 adults. This study will use flavones capsules(胶囊) The study subjects will be divided into two groups and will take two pills per day. The capsules used will all Look the same. But one group's capsules will contain flavones, while the other group will take capsules made of an inactive substance, or placebo

Dr. Manson says it's not necessary for people to start eating more chocolate, because 3 person would have to eat a huge amount of chocolate to get the same level of flavones given to the Lest subjects. He adds many manufacturers have planned to remove the flavones from their chocolate products. Similarity, Dr. says a cocoa-based flavones extract（提取）may be developed in the future But he says that more studies are needed to see how much flavones is good for our health

1.What was done to the subjects alter Dr. Small's study?

A. They were asked to take a high-level flavones drink

B. They were given capsules containing flavones

C. They were given brain imaging and memory tests

D. They were asked to take two pills of flavones capsules per day

2.What's the similarity of the 2 experiments?

A. Both use high-level flavones capsules

B. The number of the subjects is the same

C. Drinks and placebos are used in both experiments

D. The subjects are divided into two groups in both experiments

3.Why will Dr. Manson carry out the four-year study?

A. To prove the first experiment is wrong

B. To carry out the experiment further

C. To test how much flavones can improve our memory.

D. To show eating chocolate is better to improve memory.

4.What can we learn from the last paragraph?

A. It's not necessary for us to eat chocolate

B. The more we eat flavones, the better our health will be

C. In the future we can get flavones without eating chocolate

D. It's easy for people to get the same level of flavones given to the test subjects

It is bad to have food stuck between your teeth for long periods of time. This is because food attracts germs(细菌), germs produce acid, and acid hurts your teeth and gums. Flossing(使用牙线) helps to remove the food that gets stuck between your teeth. This explains why flossing helps to keep your mouth healthy, but some doctors say that flossing can be also good for your heart.

It may seem strange that something your do for your teeth can have any effect on your heart. Doctors have come up with a few ideas about how flossing works to keep your heart healthy. One idea is that the germs that hurt your teeth can leave the mouth and travel into your blood. Germs that get into the blood can then attack your heart. Another idea is based on the fact that when there are too many germs in your mouth, the body tries to fight against these germs. For some reason, the way the body fight these mouth germs may end up weakening the heart over time.

Not every doctor agrees about these ideas. Some doctors think that the link between good flossing habits and good heart health is only a coincidence. The incidence(发生率) of two or more events is completely random, as they do not admit of any reliable cause and effect relationship between them. For example, every time I wash my car, it rains. This does not mean that when I wash my car, I somehow change the weather. This is only a coincidence. Similarly, some doctors think that people who have bad flossing habits just happen to also have heart problems, and people who have good flossing habits just happen to have healthy hearts.

The theory that flossing your teeth helps to keep your heart healthy might not be true. But every doctor agrees that flossing is a great way to keep your teeth healthy. So even if flossing does not help your heart, it is sure to help your teeth. This is enough of a reason for everyone to floss their teeth every day.

1. From the passage, we know that_____

A. food stuck between your teeth may hurt your teeth

B. all of the doctors agree that flossing is good for your heart

C. doctors’ judgment about flossing is based on medical research

D. not every doctor thinks flossing helps to keep your teeth healthy

2.The underlined sentence in Paragraph 3 is to____.

A. Provide an example

B. Make a comparison

C. Introduce a new topic

D. Develop a previous statement

3.Which of the following best states the main idea of the last paragraph?_______.

A. It is a fact that flossing can help your heart as well as your teeth.

B. There is no good reason to believe that flossing will help your heart.

C. Because doctors find flossing won’t help your heart, it is useless to floss.

D. Even if flossing is only good for your teeth, you should still do it every day.

4.Which is the best title for the passage?

A. Flossing by Coincidence

B. How to Keep Your Teeth Healthy

C. Flossing Habits and Healthy Hearts

D. Why Doctors Disagree about Flossing

Ella _____ at the car crash scene in New York last Sunday; she was travelling with me in Hawaii then.

A. shouldn’t have appeared B. couldn’t have appeared

C. wouldn’t have appeared D. might not have appeared

_____ the trip from Alaska to Argentina by bike, Gregg and Brooks worked and saved money for years.

A. To pay for B. Paying for

C. Paid for D. Pay for

Waste can be seen everywhere in the school. Some students ask for more food than they can eat and others often forget to turn off the lights when they leave the classroom. They say they can afford these things. But I don’t agree with them.

Waste can bring a lot of problems. Although China is rich in some resources(资源), we are short of others, for example, fresh water. It is reported that we will have no coal or oil to use in 100 years. So if we go on wasting our resources, what can we use in the future and where can we move? Think about it. I think we should say no to the students who waste things every day. Everybody should stop wasting as soon as possible.

In our everyday life, we can do many things to prevent waste from happening, for example, turn off the water taps when we finish washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by little, everything will be changed. Waste can be stopped one day, if we do our best.

1.Which is not mentioned in this passage?

A. Fresh water. B. Forest. C. Oil. D. Coal.

2.What may happen in 100 years?

A. We may still have enough oil.

B. We may still have enough coal.

C. We may have a little oil.

D. We may have no coal or oil to use.

3.Which of the following is right?

A. Waste brings problems.

B. Waste can bring no problem.

C. China is rich in fresh water.

D. Students never waste things.

4.Which is the best title of this passage?

A. Stop Wasting

B. School life

C. Waste in the School

D. Rich Resources in China

Cheating is when a person misleads, deceives or acts dishonestly on purpose. 1. If a basketball team is for kids under 8,it's cheating for a 9-year-old play on the team. At school, in addition to cheating on a test, a kid might cheat by stealing someone else's idea for a science project. 2. This kind of cheating is called plagiarizing (抄袭).

3. Jeff is doing it by sneaking answers to a test. And it's also cheating to break the rules of a game or contest or to pretend something is yours when it isn't. When people cheat, it's not fair to other people.

It's tempting(诱惑人的) to cheat because it makes difficult things seem easy, like getting all the right answer on the rest. 4. And it won't help on the next test-unless the person cheats again.

5. They want to get good grades but hate hard work. Other kids might feel like they can't pass the test without cheating. Even though there seems to be a "good reason" for cheating, cheating isn't a good idea.

A. Some kids cheat because they're lazy.

B. Cheating can happen in a lot of different ways.

C. But it doesn't solve the problem of not knowing the material.

D. Some kids cheat once and feel so bad that they never do it again.

E. For kids, cheating may happen at school, at home, or while playing a sport.

F. There are plenty of reasons why a kid shouldn't cheat, but some kids have already cheated.

G. Kids may also cheat by copying a book report off the Internet and handing it in as it's his or her original work.

The newly built washingroom in the railway station is to the disabled passengers.

A.perfect B.accessible

C.remarkable D.potential

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