五、
跨学科 地理 任务型阅读。
阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有一项为多余选项。
主题群:自然生态
子主题:知识科普
语篇类型:说明文
难度:★★
The ground looks like a white blanket after it has been snowing for a whole night. It is time to have snowball fights and build a snowman outside. Kids can't help enjoying the white world of winter. 1.
B
Small crystals of ice(冰晶) that fall to the earth are called snow. 2.
D
There must be some water in the air to form snow.
Places like Russia, Canada and the USA have heavy snow in winter. 3.
A
These places include Singapore and many other countries around the equator(赤道).
Other than snowstorms, snowfall is good for people. 4.
F
Snowfall is also important to farmers. As the Chinese saying goes, "A fall of seasonable snow gives promise of a fruitful year." 5.
E
Melting snow waters crops. It also lowers the temperature of the ground to kill bad insects in the soil, so snow helps bring a good harvest next year.
A. However, in some places, people never see snow.
B. With snow, winter becomes a really fun time of the year.
C. This kind of snow is useful for fun activities like making a snowman.
D. It is formed(形成) when the temperature of the air is at or lower than 0 ℃.
E. Snowfall can keep the ground from getting too cold and protect crops from freezing(结冰).
F. It helps clean up the air by carrying dust to the ground.
