单项选择题

It is widely concerned that this kind of species are（）rapidly.

A．dying out
B．dying down
C．dying away
D．dying back

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—Do you mind if I close the window It's a bit cold outside. —（）.

A．Let me see
B．No, why not
C．Yes, thatll be better
D．Yes, go ahead
单项选择题
He works too hard. That is（）is wrong with him.

A． why
B． what
C． the thing what
D． all
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