单项选择题

Those experiments have laid a solid foundation for his () research in material science.

A. far
B. deep
C. farther
D. further

<上一题目录下一题>

热门试题

单项选择题

Every director needs an assistant that he can () to take care of problems that may occur in his absence.

A. count on
B. count for
C. count down
D. count out

单项选择题

Susan wants to know whether the measures have been agreed().

A. to
B. with
C. over
D. upon

相关试题