单项选择题

A．By passing steam over dry ice.
B．By turning ordinary ice into steam.
C．By melting dry ice.
D．By mixing dry ice with ordinary ice.
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单项选择题
A．She felt sorry for the man.B．She could not find the dictionary for the man.C．She could use the dictionary anywhere.D．The dictionary is not allowed to lend.
A．She felt sorry for the man.
B．She could not find the dictionary for the man.
C．She could use the dictionary anywhere.
D．The dictionary is not allowed to lend.
单项选择题
A．It is now in daily touch with nine hundred people.B．The volunteers have completed one million calls.C．It is now starting to include new comers who want to meet new friends.D．It has got support from all the neighbors of the old.
A．It is now in daily touch with nine hundred people.
B．The volunteers have completed one million calls.
C．It is now starting to include new comers who want to meet new friends.
D．It has got support from all the neighbors of the old.
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