单项选择题

The last half of the nineteenth century （） the steady improvement in the means of travel.

A. has witnessed
B. was witnessed
C. witnessed
D. is witnessed

<上一题 目录 下一题>
热门 试题

单项选择题
The course normally attracts 20 students per year, （） up to half will be from overseas.

A. in which
B. for whom
C. with which
D. of whom
单项选择题
（） his return from Japan, Prof. Li went directly to his laboratory and started working with his colleagues.

A. Upon
B. At
C. Within
D. Over
相关试题