单项选择题

Why is blinking important

A．It helps the eyes absorb eye drops.
B．It helps to keep the eyes moist.
C．It improves a person's concentration.
D．It prevents a buildup of chemicals in the eyes.

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热门试题

单项选择题

Why do some Africans reject Christian Churches

A．They feel Christianity is dull.
B．They reject Christian Churches as Western or non-African.
C．They are susceptible.
D．They are dangerous persons.

单项选择题

The main reason of people's joining the cults is ______.

A．poverty
B．insecurity
C．AIDS
D．fatalism