单项选择题

A．Whether global warming will speed up in the future.
B．Whether it will lead to widespread food shortage.
C．Whether it can be detected and checked.
D．Whether it will affect their own lives.
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单项选择题
A．They give out faint cries.B．They make noises to drive away insects.C．They extend their water pipes.D．They become elastic like rubber bands.
A．They give out faint cries.
B．They make noises to drive away insects.
C．They extend their water pipes.
D．They become elastic like rubber bands.
单项选择题
A．Go to a meeting of the fencing club.B．Watch a fencing match.C．Review for an exam.D．Attend a physical education class.
A．Go to a meeting of the fencing club.
B．Watch a fencing match.
C．Review for an exam.
D．Attend a physical education class.
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