(Despite) the time of (the year), the temperature was (enough hot) to (turn on) the air-conditioner.

A:Despite B:the year C:enough hot D:turn on

C
Paris,21st November 1783. There were hundreds of people in the street round an enormous (巨大的) balloon. "What is it" they asked. "What does it do"
Then two young men came out of a house on the other side of the street, and went to the balloon. They had some wood and paper with them, and they put it into a big basket under the balloon. Then they got into the basket. They took food with them, and some warm clothes, because it was a cold day.
Then the two young men made a fire with the wood and paper. The fire was hot, and the hot air went up into the balloon.
Cold air is heavy, but hot air is light and rises. After some minutes, the balloon was very light and left the ground!
The two young men flew about five and a half miles, and came down outside the city. It wasn’t a very long journey, but it was a very important one, because it was the first journey in the air.
Joseph and Etienne Montgolfier made this balloon. It flew because it was light, but it was dangerous because of the fire.
Two years after that, two men crossed the English Channel from England to France in a balloon full of hydrogen. Hydrogen is a very light gas. One of them was a Frenchman, Blanchard, and the other was a rich American, Dr. John Jeffries. They had a lot of problems.
First the balloon flew up very high, so they opened the valve (阀门) and a lot of gas came out. Then the balloon went down, so they threw everything out, even their food and clothes! But they reached France after an exciting journey, and landed near Calais(加来[法国港口城市] .

The young men's balloon flew because the air in it was （）

A:hot B:heavy C:cold D:fine

暂缺题干Why did Robby go back to the hot dog seller

A:She wanted to think the hot dog seller. B:The homeless man asked her for a hot dog. C:She wanted to buy a hot dog for the homeless man. D:The hot dog was so delicious that Robby wanted another.

Extremely hot weather is common in many parts of the world. Although hot weather just makes most people hot, it can cause medical problems--and death.
Health experts say that since the year 1900, extremely hot weather has killed more people in the United States than any other natural event. One year--the unusually hot summer of 1980--heat caused about 1,700 deaths in the United States. In 1995, more than 600 people died in a similar heat wave in one city--Chicago.
To measure extreme heat, government weather experts have developed the Mean Heat Index. It measures the average of how hot it is felt all day on an extremely hot day. Experts say it is the total heat of a hot day or several hot days that can affect health. Several hot days are considered a heat wave. Experts say heat waves often become deadly when the nighttime temperature does not drop much from the highest daytime temperature.
The most common medical problem caused by hot weather is heat stress. Usually, it also is the least severe. For most people, the only result of heat stress is muscle pain. The pain is a" warning that the body is becoming too hot. Doctors say drinking water will help the pain disappear after the body again has the right amounts of water and salt. For some people, however, the result is much more serious.
For example, doctors say some people face a greatly increased danger from heat stress. These people have a weak or damaged heart, high blood pressure, or other problems of the blood system. Severe heat can help cause a heart attack or stroke. Health experts say this is the most common cause of death linked to hot weather.
What can people learn from the Mean Heat Index

A:The average temperature of an extremely hot day. B:The highest temperature of an extremely hot day. C:The lowest temperature of an extremely hot day. D:The nighttime temperature of an extremely hot day.

下面有3篇短文后有5道题。请根据短文内容，为每题定1个最佳选项。
{{B}}第一篇{{/B}}

What can people learn from the Mean Heat Index?

A:The average temperature of an extremely hot day. B:The highest temperature of an extremely hot day. C:The lowest temperature of an extremely hot day. D:The nighttime temperature of an extremely hot day.

　第一篇Heat and Health 　　Extremely hot weather is common in many parts of the world.Although hot weather just makes most people hot,it can cause medical problems-and death. 　　Health experts say that since the year 1900,extremely hot weather has killed more people in the United States than any other natural event.One year-the unusually hot summer of 1980-heat caused about 1,700 deaths in the United States.In 1995,more than 600 people died in a similar heat wave in one city-Chicago. 　　To measure extreme heat,govemment weather experts have developed the Mean Heat Index.It measures the average of how hot it is felt all day on an extremely hot day.Experts say it is the total heat of a hot day or several hot days that can affect health.Several hot days are considered a heat wave.Experts say heat waves often become deadly when the nighttime temperature does not drop much from the highest daytime temperature. 　　The most common medical problem caused by hot weather is heat stress.Usually,it also is the least severe.For most peoople,the only result of heat stress is muscle pain.The pain is a warning that the body is becoming too hot.Doctors say drinking water will help the pain disappear after the body again has the right amounts of water and salt.For some people,however,the result is much more serious. 　　For example,doctors say some people face a greatly increased danger from heat stress.These people have a weak or damaged heart,high blood pressure,or other problems of the blood system.Severe heat can help cause a heart attack or stroke.Health experts say this is the most common cause of death linked to hot weather. What can people learn from the Mean Heat Index?

A:The average temperature of an extremely hot day. B:The highest temperature of an extremely hot day. C:The lowest temperature of an extremely hot day. D:The nighttime temperature of an extremely hot day.

下面有3篇短文，每篇短文后有5道题。请根据短文回答其后面的问题，为每题确定1个最佳答案。
第一篇

Heat and Health
Extremely hot weather is common in many parts of the world. Although hot weather just makes most people hot, it can cause medical problems--and death.
Health experts say that since the year 1900, extremely hot weather has killed more people in the United States than any other natural event. One year--the unusually hot summer of 1980--heat caused about 1,700 deaths in the United States. In 1995, more than 600 people died in a similar heat wave in one city--Chicago.
To measure extreme heat, government weather experts have developed the Mean Heat Index. It measures the average of how hot it is felt all day on an extremely hot day. Experts say it is the total heat of a hot day or several hot days that can affect health. Several hot days are considered a heat wave. Experts say heat waves often become deadly when the nighttime temperature does not drop much from the highest daytime temperature.
The most common medical problem caused by hot weather is heat stress. Usually, it also is the least severe. For most people, the only result of heat stress is muscle pain. The pain is a" warning that the body is becoming too hot. Doctors say drinking water will help the pain disappear after the body again has the right amounts of water and salt. For some people, however, the result is much more serious.
For example, doctors say some people face a greatly increased danger from heat stress. These people have a weak or damaged heart, high blood pressure, or other problems of the blood system. Severe heat can help cause a heart attack or stroke. Health experts say this is the most common cause of death linked to hot weather.

What can people learn from the Mean Heat Index（）

A:The average temperature of an extremely hot day. B:The highest temperature of an extremely hot day. C:The lowest temperature of an extremely hot day. D:The nighttime temperature of an extremely hot day.