难挥发物质的水溶液,在不断沸腾时,它的沸点是 ( )
A. 继续升高
B. 恒定不变
C. 继续下降
D. 无
查看答案
土壤中的水分能传递到植物体中是因为土壤溶液的渗透压比植物细胞液的渗透压大的缘故。
A. 对
B. 错
The great man_____________(生就.......) a sixth finger in his left hand.
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Many women ________________(为........作出牺牲)for their family.