五、跨学科 地理 任务型阅读。
阅读短文,根据所读内容,在文章后题的空格里填入最恰当的内容。注意:1~8题每个空格只填1 个单词,第 9 题词数不少于 20。
主题群:自然生态
子主题:知识科普
语篇类型:说明文
难度:★★★
A cloud is made of water drops or ice crystals floating in the sky. There are many kinds of clouds. Clouds are an important part in Earth's weather.
The sky can be full of water. But most of the time you can't see the water. The drops of water are too small to see. They have turned into water vapor. As the water vapor goes higher in the sky, the air goes cooler. The cooler air causes the water droplets(水滴) to start to stick to things such as bits of dust, ice or sea salt.
Clouds get their names in two ways. One way is by where they're found in the sky. Some clouds are high up in the sky. Low clouds form closer to earth's surface. In fact, low clouds can even touch the ground. These clouds are called fog. Middle clouds are found between low and high clouds.
Another way clouds are named is by their shape. Cirrus clouds(卷云) are high clouds. They look like feathers. Altocumulus clouds are middle clouds. These clouds look like giant cotton balls in the sky. Stratus clouds are low clouds. The sky is covered by them. They look like bed sheets.
Most of the water in clouds is in very small droplets. The droplets are so light that they float in the air. Sometimes those droplets join with other droplets. Then they turn into larger drops. When that happens, gravity(重力) causes them to fall to the earth. We call the falling water drops "rain". When the air is colder, the water may form snowflakes instead. Freezing rain, sleet or even hail can fall from clouds.
Clouds are important for many reasons. Rain and snow are two of those reasons. At night, clouds reflect heat and keep the ground warmer. During the day, clouds make shade that can keep us cooler. Studying clouds helps people have a better understanding of Earth's weather.
|Introduction|Clouds are of great 1.
importance
to Earth's weather, such as rain and snow.|
| ---- | ---- |
|Ways of forming clouds|• Small drops of water turn into water vapor.
• As the water vapor 2.
rises
in the sky, the air goes cooler. The cooler air finally causes the small water drops to form clouds.|
|3.
Types/Names
of clouds|• High clouds, middle clouds and low clouds are named by their 4.
places/heights
.
• When lots of low clouds touch the ground, the weather will be 5.
foggy
.
• According to their shape, clouds also have three names. Cirrus clouds look like feathers while stratus clouds 6.
cover
the sky like bed sheets.|
|Different forms|• Small and 7.
light
droplets float in the air.
• Gravity makes larger drops 8.
fall
to the earth. Falling water drops are called "rain".|
|Reasons for studying clouds|Why do people study clouds according to the passage?
9.
Because studying clouds helps people have a better understanding of Earth's weather, and clouds are important in many aspects like providing rain and snow, and regulating the ground temperature day and night.(言之有理即可)
|
