单项选择题

A．Farming implements.
B．Scientific farming methods.
C．Heat resistant and drought resistant crops.
D．Scientific farming system.
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单项选择题
A．Casual contact with AIDS victims will not lead to AIDS.B．Publics don’t know how AIDS spreads yet.C．There are many ways of contact in catching AIDS.D．Doctors don’t know how to prevent the spread of AIDS to others.
A．Casual contact with AIDS victims will not lead to AIDS.
B．Publics don’t know how AIDS spreads yet.
C．There are many ways of contact in catching AIDS.
D．Doctors don’t know how to prevent the spread of AIDS to others.
单项选择题
A．To continue to wait.B．Tc leave immediately.C．To seek their friend.D．To give a call to their friend.
A．To continue to wait.
B．Tc leave immediately.
C．To seek their friend.
D．To give a call to their friend.
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