题目内容

Did your uncle fly to Paris directly?

-No,he travelled from Hong Kong _____ London.

A. through B. by way of C. across D. on way of

 

B

【解析】句意为:——你叔叔直接飞巴黎去了? ——不,他从香港出发取道伦敦飞抵巴黎。by way of意为"途经";"经由";"取道"。

 

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Most of us are used to seasons. Each year, spring follows winter, which follows autumn, which follows summer, which follows spring. And winter is colder than summer. But the earth goes through temperature cycles over much longer periods than those that we experience.

Between 65,000 and 35,000 years ago, the planet was much colder than it is now. During that time the temperature also changed a lot, with periods of warming and cooling. Ice melted during the warm periods, which made sea levels rise. Water froze again during the cold periods.

A new study from Switzerland sheds light on where ice sheets melted during the ice age.

It now seems that the ice melted at both ends of the earth, rather than just in either northern or southern areas. This surprised the researchers from the University of Bern.

Scientists have long assumed(认为) that most of the ice that melted was in the Northern hemisphere(半球) during the 30,000-year long ice age. That belief was held because the North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. It is easier for ice sheets to grow on land. If surrounded by sea the ice can easily just slip into the ocean instead of building up.

The researchers used a computer model to look at ways the ice could melt and how it might affect sea levels. They compared these results to evidence of how temperatures and currents actually changed during that time.

The model showed that if it was only in the Northern hemisphere that ice melted, there would have been a bigger impact(影响) on ocean currents(洋流) and sea temperatures than what actually happened. Studies suggest that melting just in the Southern hemisphere would have been impossible, too.

The only reasonable conclusion, the scientists could make, was that ice melted equally in the North and the South.

It is still a mystery as to what caused the temperature changes that caused the ice to melt.

1.The underlined phrase “sheds light on” (in paragraph 3) can be replaced by .

A. throws doubts on

B. beats down on

C. makes it clear

D. makes light of

2.We can infer from the passage .

A. the ice can easily just slip into the ocean

B. melting just in the Northern hemisphere would have been impossible

C. volcanoes caused the ice to melt

D. researchers often use the computer models help their research work.

3.The scientists are not sure .

A. what caused the temperature changes

B. where ice sheets melted during the ice age

C. how long the ice age lasted

D. what the earth is made up of

4.Which of the following is the best title for the passage?

A. A computer model

B. Studies show ice melted equally in the North and the South during the ice age

C. Most of the ice melted in the Northern hemisphere during the 30,000-year long ice age.

D. A survey result

 

The Pacific island nation of Nauru used to be a beautiful place. Now it is an ecological disaster area. Nauru's heartbreaking story could have one good consequence—other countries might learn from its mistakes.

For thousands of years, Polynesian people lived on the remote island of Nauru, far from western civilization. The first European to arrive was John Fearn in 1798. He was the British captain of the Hunter, a whaling ship. He called the island Pleasant Island.

However, because it was very remote, Nauru had little communication with Europeans at first. Then whaling ships and other traders began to visit, bringing guns and alcohol. These elements destroyed the social balance of the twelve family groups on the island. A ten?year civil war started, which reduced the population from 1,400 to 900.

Nauru's real troubles began in 1899 when a British mining company discovered phosphate(磷酸盐) on the island. In fact, it found that the island of Nauru was nearly all phosphate, which is a very important fertilizer for farming. The company began mining the phosphate.

A phosphate mine is not a hole in the ground; it is a strip?mine. When a company strip?mines, it removes the top layer of soil. Then it takes away the material it wants. Strip?mining totally destroys the land. Gradually, the lovely island of Nauru started to look like the moon.

In 1968, Nauru became one of the richest countries in the world. Every year the government received millions and millions of dollars for its phosphate.

Unfortunately, the leaders invested the money unwisely and lost millions of dollars. In addition, they used millions more dollars for personal expenses. Soon people realized that they had a terrible problem—their phosphate was running out. Ninety percent of their island was destroyed and they had nothing. By 2000, Nauru was almost financially ruined. Experts say that it would take approximately $433,600,000 and more than 20 years to repair the island. This will probably never happen.

1.What might be the author's purpose in writing the text?

A. To seek help for Nauru's problems.

B. To give a warning to other countries.

C. To show the importance of money.

D. To tell a heartbreaking story of a war.

2.What was Nauru like before the Europeans came?

A. Rich and powerful.

B. Modern and open.

C. Peaceful and attractive.

D. Greedy and aggressive.

3.The ecological disaster in Nauru resulted from ________.

A. soil pollution

B. phosphate overmining

C. farming activity

D. whale hunting

4.Which of the following was a cause of Nauru's financial problem?

A. Its leaders misused the money.

B. It spent too much repairing the island.

C. Its phosphate mining cost much money.

D. It lost millions of dollars in the civil war.

5.What can we learn about Nauru from the last paragraph?

A. The ecological damage is difficult to repair.

B. The leaders will take the experts' words seriously.

C. The island was abandoned by the Nauruans.

D. The phosphate mines were destroyed.

 

Something in chocolate could be used to stop coughs and lead to more effective medicines, say UK researchers.

Their study found that theobromine, found in cocoa, was nearly a third more effective in stopping coughs than codeine, which was considered the best cough medicine at present.

The Imperial College London researchers who published their results online said the discovery could lead to more effective cough treatment. “While coughing is not necessarily harmful(有害的) it can have a major effect on the quality of life, and this discovery could be a huge step forward in treating this problem,” said Professor Peter Barnes.

Ten healthy volunteers(志愿者) were given theobromine, codeine or placebo, a pill that contains no medicine, during the experiment. Neither the volunteers nor the researchers knew who received which pill. The researchers then measured levels of capsaicin, which is used in research to cause coughing and as a sign of how well the medicine are stopping coughs.

The team found that, when the volunteers were given theobromine, the capsaicin need to produce a cough was around a third higher than in the placebo group. When they were given codeine they need only slightly higher levers of capsaicin to cause a cough compared with the placebo.

The researchers said that theobromine worked by keeping down a verve activity(神经活动), which cause coughing. They also found that unlike some standard cough treatments, theobromine caused no side effects such as sleepiness.

1.According to Professor Barnes, theobromine ______.

A. cannot be as effective as codeine

B. can be harmful to people’s health

C. cannot be separated from chocolate

D. can be a more effective cure for coughs

2.What was used in the experiment to cause coughing?

A. Theobromine. B. Codeine. C. Capsaicin. D. Placebo.

3.We learn from the text that volunteers in the experiment _____.

A. were patients with bad coughs

B. were divided into the three groups

C. received standard treatments

D. suffered little side effects

4.Which of the following would be the best title for the text?

A. Codeine: A New Medicine B. Chocolate May Cure Coughs

C. Cough Treatment: A Hard Case D. Theobromine Can Cause Coughs

 

In 1943, when I was 4, my parents moved from Coeur d'Alene, Idaho, to Fairbanks, Alaska, where adventure was never very far away.

We arrived in the summer, just in time to enjoy the midnight sun. All that sunlight was fantastic for Mom's vegetable garden. Working in the garden at midnight tended to throw her timing off, so she didn't care much about my bedtime.

Dad was a Railway Express agent and Mom was his clerk. That left me in a mess. I usually managed to find some trouble to get into. Once I had a little Are going in the dirt basement of a hotel. I had tried to light a barrel(桶) of paint but couldn't really get a good fire going. The smoke got pretty bad, though, and when 1 made my exit, a crowd and the police were there to greet me. The policemen took my matches and drove me

Mom and Dad were occupied in the garden and Dad told the police to keep me, and they did! I had a tour of the prison before Mom rescued me. 1 hadn't turned 5 yet.

As I entered kindergarten, the serious cold began to set in. Would it surprise you to know that I soon left part of my tongue on a metal handrail at school?

As for Leonhard Seppala, famous as a dog sledder (驾雪橇者), I think I knew him well because I was taken for a ride with his white dog team one Sunday. At the time I didn't realize what a superstar he was, but I do remember the ride well. I was wrapped (包裹) heavily and well sheltered from the freezing and blowing weather.

In 1950, we moved back to Coeur d'Alene, but we got one more Alaskan adventure when Leonhard invited us eight years later by paying a visit to Idaho to attend a gathering of former neighbors of Alaska.

1.What can be inferred about the author's family?

A. His father was a cruel man. B. His parents didn't love him.

C. His parents used to be very busy. D. His mother didn't have any jobs.

2.What happened when the author was 4?

A. He learned to smoke. B. He was locked in a basement.

C. He was arrested by the poli D. He nearly caused a fire accident.

3.Which of the following is true?

A. Leonhard was good at driving dog sleds.

B. The author spent his whole childhood in Alaska.

C. Leonhard often visited the author's family after 1950.

D. The author suffered a lot while taking the dog sled in Alaska.

4.What is the author's purpose of writing the text?

A. To look back on his childhood with adventures.

B. To describe the extreme weather of Alaska.

C. To express how much he misses Leonhard.

D. To show off his pride in making trouble.

 

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