单项选择题


A．when
B．for
C．but
D．that
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单项选择题
A．terribleB．possibleC．enjoyableD．profitable
A．terrible
B．possible
C．enjoyable
D．profitable
单项选择题
In the experiments, ______.
A．there was an increase in the human consumption of salt
B．salt -eaters have bad health conditions
C．the environment was strictly monitored
D．high -blood pressure was easier put under control
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