题目内容

假定你是李华,你的美国笔友Andy即将到你所在的中学做一年交换生(exchange student),想提前了解一些情况,故写信向你求助。请你给他写一封回信,提供有关天气、当地饮食习惯、学校生活等方面的信息。

注意:

1.词数100左右;

2.可以适当增加细节,以使行文连贯;

3.开头和结尾己给出,但不计入总词数。

Dear Andy,

I'm glad to hear that you are coming to study with us for a year as an exchange student.__________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________

Looking forward to meeting you.

Yours,

Li Hua

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George Aldrich, whose official title is chemical specialist, works at NASA’s White Sands Test Facility in New Mexico. He uses his nose to protect astronauts from unpleasant or harmful odors (气味). His near four-decade career has involved smelling objects from technical handbooks to astronauts’ personal things.

It’s crucial that all items taken aboard the International Space Station (ISS) are odorless. Since astronauts are allowed to bring personal items aboard, all their objects must be smell-checked before leaving Earth. In a video provided by Science Channel, Aldrich relates on specific occasion when an astronaut wanted to build a ship in a bottle in space. Everything in the ship-building process had to be sniffed — right down to the glue.

Aldrich and his team are responsible for making sure that objects are not only odorless but also harmless to astronauts. When the ISS heats up, a process called off-gassing occurs, which means chemicals flow out from certain substances (物质). Objects that would be safe on Earth could give off unpleasant odors or become dangerous when exposed to high temperatures in the ISS’s unique environment.

Of course, humans aren’t the only testers or the first to be exposed to potentially dangerous objects. Before Aldrich sticks his nose into a substance, it has been examined by machines. Even though machines can detect unsafe substances, computers cannot tell exactly how things smell to humans. While something could be technically fine, it could be smelly to an astronaut.

Aldrich’s nose is not alone there. He is the head of a hard-sniffing team of smell testers. Together they smell each object and rate it on a scale (等级) of 1 to 4. According to NASA, I cannot be detected, and 4 is considered not bearable. After the scientists conclude their tests, the scores are averaged. If an item is rated more than 2.4 on the scale, it fails the test and is not allowed on the flight.

1.Which can describe the smell check from Paragraph 2?

A. Quite dangerous. B. Extremely strict.

C. Rather boring. D. Very complex.

2.What is a threat to astronauts’ safety at the ISS?

A. Negative emotions. B. Odor-related disease.

C. The off-gassing process. D. Changes in temperature.

3.What should be done before Aldrich and his team start their work?

A. Using machines to test objects.

B. Having a meeting to make the scale.

C. Using computers to examine their noses.

D. Listing potentially dangerous substances.

4.What is the text mainly about?

A. An unusual smell tester. B. Astronauts’ life at the ISS.

C. Strong odors in a spaceship. D. The smell of personal items.

【安徽省江南十校2017届高三3月联考】D

A new study, a project of the researchers from the University of Pittsburgh in Pennsylvania, finds the fitness tracker probably does not help with weight loss.

The devices are designed to record your physical activity. They are usually worn around the wrist, where they measure a person’s heart rate. The research team looked at two groups of individuals. The first wore a fitness tracker and took part in health counseling (咨询) with experts to consider the best weight-loss plan. The researchers compared this group with people who only got health counseling.

The study found that those only speaking with the health experts lost nearly 6 kilograms, but those using a fitness tracker lost only 3.5 kilograms. John Jakicic, the lead researcher, questioned the use of electronic devices for weight control in place of “effective behavioral counseling for physical activity and diet.”

The study involved 470 subjects aged between 18 and 35. Some of them were overweight, while others were considered obese (肥胖的).Over three fourths of the subjects were women. All the subjects were told to increase physical activity and start on a low-calorie diet. They had their weight measured once every six months. After six months, researchers divided the group into two parts: one continued with monthly counseling, while members of the other group were given a fitness tracker. Eighteen months later, both groups “showed significant improvements in fitness, physical activity, and diet,” with no major difference between groups. However, when it came to losing weight, the people who only spoke with experts lost nearly twice as much weight.

Jakicic said, ”the study’s findings are important because effective long-term treatments are needed to address America’s obesity. ” More information is needed, he added, to learn how to best use these devices to change “physical activity and diet behaviors” in adults who want to lose weight.

1.All the subjects in the study were asked to_____________.

A. start on a high-calorie diet B. wear a fitness tracker

C. increase physical activities D. record their heart rates

2.Why does Jakicic think the findings are important?

A. Wearing fitness trackers hardly helps people lose weight.

B. Physical activity and diet have no effect on weight loss.

C. Handling obesity requires effective long-term treatments.

D. There are great differences in fitness between both groups.

3.What can we infer about the study mentioned in the text?

A. The study went on for about two years.

B. More than 120 men took part in the study.

C. Health counseling helps lose almost 6 kilograms.

D. Wearing a fitness tracker is useful for keeping slim.

4.The purpose of the text is to________

A. describe how the researchers were conducting the study

B. indicate regular counseling for weight control is necessary

C. convince readers to wear fitness trackers for weight control

D. warn women are more likely to suffer from weight problems

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