题目内容
Online schools, which ________ the needs of different people, have emerged as an increasingly popular education alternative.
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This kind of songbird sleeps much less during its annual ________,but that doesn’t seem to affect its flying.
The developing nations want rich countries to help shoulder the cost of ________ forests.
In the study, researchers succeeded in determining how coffee ________ different areas of the brain in 15 volunteers.
They are trying to ________ the risk as much as they can by making a more thorough investigation of the market.
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