问题
选择题
A recent study showed how the temperature, ____ water freezes, can be changed using electric charges. [ ]
A. at which
B. for which
C. in which
D. with which
答案
答案:A
A recent study showed how the temperature, ____ water freezes, can be changed using electric charges. [ ]
A. at which
B. for which
C. in which
D. with which
答案:A