单项选择题

Many people fail in learning a language because ______.

A．they are too old
B．they lack language ability
C．they lose their own confidence
D．the teachers are not good enough
<上一题 目录 下一题>
热门 试题

单项选择题
According to the passage, in the competition for scientific leadership,______.
A．applied research is of the greatest significance
B．basic research is of the greatest significance
C．research in high-energy physics is of the greatest significance
D．research in high-tech fields is of the greatest significance
单项选择题
America's technological universities and government laboratories are generally ______.
A．loved by scientists in other parts of the world
B．disliked by scientists in other parts of the world
C．admired by scientists in other parts of the world
D．jealous of scientists in other parts of the world
相关试题