单项选择题

A．They are a threat to most forms of living creatures.
B．They cannot be controlled effectively.
C．They will be wiped out with male mosquitoes one day from the earth.
D．They are a necessary element in the balance of nature.
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单项选择题
A．She’’ll type the letter for the man.B．She’’ll teach the man to operate the computer.C．She doesn’’t think his sister is a good typist.D．She thinks the man should buy a computer.
A．She’’ll type the letter for the man.
B．She’’ll teach the man to operate the computer.
C．She doesn’’t think his sister is a good typist.
D．She thinks the man should buy a computer.
单项选择题
A．How much the cut hurt.B．How deep the cut was.C．How easily he was cut.D．How concerned the woman was.
A．How much the cut hurt.
B．How deep the cut was.
C．How easily he was cut.
D．How concerned the woman was.
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