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问题
读图填空题
沙漠中的植物普通存在地下根比地上部分长的现象,这是对
地适应。
答案
干旱环境
沙漠中的植物地下根比较长,是为了深入深层吸收水分,是对干旱环境的适应。
选择题
We know that the Black Sea, one thousand years ago, was a fresh water lake about ______ and unconnected with the Mediterranean.
A. its two thirds present size
B. two-thirds size of the present
C. its two-thirds of the present size
D. two- thirds its present size
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问答题 简答题
体育教学训练中进行目标设置的原则有哪些?
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