题目内容
阅读与表达(问答式)
On 19th September 1783, Pilatre De Rozier, a scientist, sent the first hot air balloon. The passengers were three animals and the balloon stayed in the air for about 15 minutes before hitting back to the ground.
The first manned(载人的) flight was about 2 months later, with a balloon made by 2 French brothers. The balloon flew for a period of 20 minutes.
Sailing through the sky in the balloon, high above buildings and trees, you can't feel or hear the wind because you're traveling in the same direction and at the same speed as it is.
A hot air balloon has three main parts: the balloon, called an envelope; a basket, where passengers ride; and a burner system, which supplies the hot air.
Most balloon envelopes are made of strong, lightweight nylon(尼龙). They are different in size and shape, but they have to be really, really big to lift even one person. Most weigh more than an adult man.
The basket is usually made of wicker(柳条), which is strong but not too hard. It needs to bend a bit for a soft landing, just like a good jumper bends her legs instead of keeping them straight when she lands.
The hot air balloon works on the theory that hot air rises faster than cooler air. When the burner system is turned on, it makes a noisy sound, but once the balloon is flying, the burner can be turned off. The air in the envelope will then cool, and the balloon will slowly go down unless the pilot starts the burner system again.
To control a hot air balloon, a pilot adds hot air to it to go up or lets the air out to go down until he finds a wind blowing in the direction he wants to fly. But no matter which way the wind blows, the passengers have an amazing bird's-eye view of the world.
根据短文内容，完成下列小题。
1.Who were the passengers on the first hot air balloon?
2.Did the first manned balloon fly for 20 minutes?
3.Why is the basket usually made of wicker?
4.How does a pilot control the hot air balloon?
5.What are the main points in this passage?
阅读快车系列答案请阅读下面短文，在短文后表格中的空白处填上适当的単词(注意:每空1个单词)。
Global warming is a big problem that we have to stop. One of the best things we can do is to plant more trees. Trees can take in carbon dioxide（二氧化碳）in the air and stop global warming.
According to a new report, China is doing a great job of "greening" the world.
A team of scientists at Boston University has been working with NASA to study Earth's green vegetation（植被）. They used a special NASA camera and found that global leaf area has increased by 5 percent since the early 2000s. And China was responsible for 25 percent of that gain, according to the study. That's about one-quarter of the size of the entire Amazon rainforest.
The growth mainly came from China's forest protection programs, NASA said. For example, since 1962, China has been planting trees in Saihanba in Hebei province. It was once a desert. But now, China has turned the area into the country's largest man-made forest.
The Chinese public has also joined in these efforts. Ant Forest in the Alipay app gives users points for doing eco-friendly(环保的) things such as walking and going paperless in the office. Users can then use these points to water and grow their own virtual trees. When the virtual trees are big enough, Ant Forest will plant real trees somewhere in the world. More than 55 million trees have been planted in this way.
Title： Greening the world
Introduction | 1.more trees is one of the best things we can do to stop global warming. | |
2. | Saihanba | China has3.many forests so far. China has been planting trees in Saihanba in Hebei province. And it is the largest man-made forest now. |
Ant Forest | Ant Forest encourages users to do eco-friendly things. 4.Ant Forest, more than 55 million real trees have been planted in the world. | |
Result | China has made great contributions to forest protection, which gains about 5.of the size of the whole Amazon rainforest. |