单项选择题

On the whole, the passage is mainly about ______.

A．the second largest continent in the world
B．a dangerous and unpleasant insect
C．farmland in the heart of Africa
D．a kind of illness that can destroy cattle

<上一题目录下一题>

热门试题

单项选择题

Which statement does this passage lead you to believe

A．It won't be easy to get rid of the tsetse flies in Africa.
B．Sleeping sickness is unknown to Africans.
C．People did not know sleeping sickness could cause deaths.
D．The people there did not know the tsetse carried a kind of disease to man.

单项选择题

When a person's brain is dead, he ______.

A．will never wake up again
B．maybe wakes up again
C．will wake up again by using a machine
D．sometimes wakes up