单项选择题

Which of the following shows that a person is NOT dreaming in his sleep（）

A．His eyes begin to move.
B．His breathing becomes faster.
C．His heart rate increases.
D．His eyes stop movin

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单项选择题

23（）

A．various
B．similar
C．familiar
D．same

单项选择题

The air in the house does not remain fresh very long. It’s because （）

A．the fresh air can’t come into the house
B．there is only a little fresh air coming in and a little waste going out
C．the air in the house can’t remain fresh
D．the house gives off wastes