Paragraph 4__________

A．The invention of the fridge

B．The pollution caused by fridges

C．The widespread need for fridges

D．The days without the fridge

E．The waste of energy caused by fridges

F．The fridge's contribution to commerce

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参考答案

本段的主题句为首句，即冰箱的确促进了市场销售，而“marketing(市场销售)”这个词也是在段落中反复出现，因此判断F(commerce(贸易)与marketing(销售)呼应)是答案。

1 Paragraph 5 __________

A．The invention of the fridge

B．The pollution caused by fridges

C．The widespread need for fridges

D．The days without the fridge

E．The waste of energy caused by fridges

F．The fridge's contribution to commerce

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2 Paragraph 6 __________

A．The invention of the fridge

B．The pollution caused by fridges

C．The widespread need for fridges

D．The days without the fridge

E．The waste of energy caused by fridges

F．The fridge's contribution to commerce

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3 Before fi-idges came into use, it was still possible for people to have fresh foods because __________.

A．milk, meat, vegetables, etc. were delivered

B．it has promoted the sales of many kinds of commodities

C．foods can be preserved

D．most kids like iced soft drinks

E．every housewife needs food

F．the fridge produced when it is working

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