单项选择题

The waste, (according to) the people there, (has already) found (their) way (into) the drinking water.

A．A
B．B
C．C
D．D
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单项选择题
Her name (sounds) familiar (with) me but I (can’’t) tell (who) she is at the moment.
A．A
B．B
C．C
D．D
问答题
By the year 2050, experts believe that the problems to explore the food, minerals and energy resources of the sea will have been largely solved.
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