What do you think of when you hear the word "desert"? We usually think of deserts as hot, dry places. In fact, there are both hot and cold deserts in the world. Scientists defined deserts as areas of land where there are less than ten inches of rainfalls per year and there are few plants. _______
AIn arctic and Antarctic regions, for example, there is very little rain.正確答案
BThey are, however, home to a fascinating variety of plants and animals.
CHot deserts, on the other hand, have high temperatures, usually over 75°F. in the daytime.
DBecause it stays frozen on the ground, plants cannot use it to grow.
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