单项选择题


A．He is using his computer for work purposes.
B．He often plays games on his computer.
C．His computer makes his life easier.
D．His client cannot use a computer.
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单项选择题
Which of the following best describes the passage as a whole
A．The Origin of Species is a very significant book.
B．Darwin’s discoveries were proved to be right though the Origin of Species was severely attacked.
C．The evolution of men has gone through a very long process.
D．It was impossible for Darwin to prove his ideas only with the aid of fossils.
单项选择题
Sharks eat their food by ______
A．sucking
B．swallowing
C．grinding
D．chewing
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