单项选择题


Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．Materials that are easy to shape.
B．The bones of men who made tools.
C．Stones that do not decay.
D．Ancient tools made from stone.
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单项选择题
A．Because cannabis proved to be more harmful than tobacco.B．Because canabis is already so widespread.C．Because it is not known whether cannabis may be harmful or not.D．Because canabis is proved to be positively harmful.
A．Because cannabis proved to be more harmful than tobacco.
B．Because canabis is already so widespread.
C．Because it is not known whether cannabis may be harmful or not.
D．Because canabis is proved to be positively harmful.
单项选择题
A．Go to see the game with the woman.B．Put on more clothes.C．Watch the game on TV.D．Watch a film on TV.
A．Go to see the game with the woman.
B．Put on more clothes.
C．Watch the game on TV.
D．Watch a film on TV.
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