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18-22
18. International trade is increasing at a greater rate than the world economy.
镜像：International trade is NOT increasing at a greater rate than the world.
题干原样是说 International trade 增长的比world economy快。
它的镜像就是International trade增长的不比world economy快。
原文：While the global economy has been expanding at a bit over 3% a year, the volume of trade has been rising at a compound annual rate of about twice that. 原文写的是世界经济增长3%每年，但是trade增长的是2倍于这个速度。所以出现的是题干原样，所以是正确。
19.Cheap labour guarantees effective trade conditions.
镜像：Cheap labour does not guarantee effective trade onditions.
题干原样是说cheap labour可以保证effective trade conditions.
它的镜像就是cheap labour 不能保证effective trade conditions.
原文：Cheap labour may make Chinese clothing competitive in America, but if delays in shipment tie up working capital and cause winter coats to arrive in spring, trade may lose its advantage.
原文写的是cheap labour有可能让中国的衣服有竞争力，但是也有可能最终失去优势。所以就是cheaper labour不能保证 effective trade conditions，所以出现的是题干的镜像，所以是错误。
20.Japan imports more meat and steel than France.
镜像：Japan does not import more meat and steel than France.
题干原样说是Japan比France进口更多的肉和钢铁。
它的镜像就是Japan不比France进口更多的肉和钢铁。
原文：At the turn of the 20th century, agriculture and manufacturing were the two most important sectors almost everywhere, accounting for about 70% of total output in Germany, Italy and France, and 40-50% in
America, Britain and Japan.
原文写的是农业和制造业占德国、意大利和法国总产量的70%，占美国，英国和日本的40%-50%。既没有出现原样，也没有出现镜像。所以是NG。
21.Most countries continue to prefer to trade with nearby nations.
镜像：Most countries do not continue to prefer to trade with nearby nations.
题干原样说是大部分国家继续偏好trade with nearby nations.
它的镜像就是大部分国家不继续偏好trade with nearby nations.
原文：Countries still trade disproportionately with their geographic neighbours.
原文写的是国家依然继续trade with neighbours. 所以出现的是原样，所以是正确。 | 
