问题
单项选择题
One of the effective ways to lessen environmental pollution is the reservation and protection of more swamps.
A．vast thick corals
B．pockets of wet land
C．warm volcanoes
D．millions of bees and wasps
答案
参考答案：B
解析： 名词辨析。 swamp沼泽，湿地，煤层聚水洼：The swamp country is inclined to poach in winter．这片沼泽地带在冬季一踏就陷下去了。pockets of wet land小块湿地。coral 珊瑚；volcano火山；bees and wasps蜜蜂和黄蜂。