问题
选择题
-Shall we go skating or stay at home?
-Which________ do yourself ?[ ]
A. do you rather
B. would you rather
C. will you rather
D. should you rather
答案
答案:A
-Shall we go skating or stay at home?
-Which________ do yourself ?[ ]
A. do you rather
B. would you rather
C. will you rather
D. should you rather
答案:A
由一价离子组成的四种盐:AC、BD、AD、BC的1mol/L的溶液,在室温下前两种溶液的PH=7,第三种溶液的PH>7,最后一种溶液的PH<7,则( )
A | B | C | D | |
碱性 | AOH>BOH | AOH<BOH | AOH>BOH | AOH<BOH |
酸性 | HC>HD | HC>HD | HC<HD | HC<HD |