《水经注》是一部综合性的地理学专著,作者是[ ]
A.贾思勰
B.祖冲之
C.郦道元
D.范缜
答案:C
下列有关溶液的说法中,正确的是
A.乳化能增强乳浊液的不稳定性
B.在其它条件不变时,氮气的溶解度随压强的升高而减小
C.均一、稳定的液体都是溶液
D.同一种物质在不同溶剂中的溶解性不同
根据句意及首字母提示完成下列单词。
1. She is a reporter, and she works for a m____.
2. S is the hottest season of the year.
3. She is ill and has to be in h
4. I t____Chinese in a school.I am a teacher.
5. Can you p football with me this afternoon?