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

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热门试题

单项选择题

Someone who is hurt badly and is unconscious ______ pain.

A．must feel
B．feels no
C．sometimes feels
D．probably feels

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