单项选择题

A．Health.
B．Industry.
C．clean air.
D．Pure water.
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单项选择题
A．He hadn’t noticed a lot of the woman’s mistakes.B．He’s not qualified to proofread the woman’s report.C．He thinks the woman should have asked him earlier.D．He’ll be able to talk to the woman in a few minutes.
A．He hadn’t noticed a lot of the woman’s mistakes.
B．He’s not qualified to proofread the woman’s report.
C．He thinks the woman should have asked him earlier.
D．He’ll be able to talk to the woman in a few minutes.
单项选择题
A．To measure amounts of rainfall.B．To cheek the accuracy of scales.C．To observe changes in the atmosphere.D．To calculate the density of other metals.
A．To measure amounts of rainfall.
B．To cheek the accuracy of scales.
C．To observe changes in the atmosphere.
D．To calculate the density of other metals.
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