单项选择题

A．It conserves battery power.
B．It lets your laptop rest.
C．It makes your laptop easy to control.
D．It replaces screen saver.
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单项选择题
The plants and animals were all the same as those known in the old world.
A．Y
B．N
C．NG
单项选择题
A．She felt proud.B．She felt satisfied.C．She felt delighted.D．She felt surprised.
A．She felt proud.
B．She felt satisfied.
C．She felt delighted.
D．She felt surprised.
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