题目内容

浓度相同的蔗糖、HAc、NaCl和Na2SO4水溶液,其中沸点最高的是 ()

A. 蔗糖
B. HAc
C. NaCl
D. Na2SO4

查看答案
更多问题

Changes were taking place, though at the time no one fully ______ how important these changes were to be.

A. appreciated
B. stared
C. touched
D. begged

Jack waved his hand as he continued to ______ at the pre-war photograph of the two men.

A. see
B. watch
C. touch
D. stare

In the museum, we are not allowed to ______ the exhibits.

A. avoid
B. distance
C. touch
D. expect

The boy is reaching _____ the book on the shelf, but he can’t touch it.

A. for
B. with
C. than
D. bore

答案查题题库