单项选择题

Why is the tsetse fly a problem in Africa

A．People do not like the sound it makes.
B．It eats food that people need.
C．It has killed many cattle herds.
D．It can destroy the crop there.
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单项选择题
The underlined part print illiterate in the text refers to ______.
A．one who has never learnt printing
B．one who has never learnt to read
C．one who is not computer literate
D．one who is not able to use a typewriter
单项选择题
Who plays the role of the President in the film
A．Sigourney Weaver.
B．Kevin Kline.
C．Bill Mitchell.
D．Ivan Reitman.
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