填空题

A federal law requires that, by 1975, new cars should be equipped with devices to remove ______.

【参考答案】

almost all harmful fumes
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单项选择题
A．She will buy another calculator.B．She will give hers to the man for a coffee.C．She wants the man to buy a calculator.D．She will buy a calculator.
A．She will buy another calculator.
B．She will give hers to the man for a coffee.
C．She wants the man to buy a calculator.
D．She will buy a calculator.
填空题
The term smog is the combination of two words: ______ and ______.
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