2017届高考英语一轮复习夯实训练：Unit 5《Rhythm》（北师大版含解析）_高考复习指南

2017届高考英语一轮复习夯实训练：Unit 5《Rhythm》（北师大版含解析）

　　C.Benefits of searching on Google.

　　D.More bad effects of light pollution.

　　1．解析：选B　推理判断题根据第三段第二句中“but you must remember that all the light you see wastes electricity”可知所有的照明都会浪费电因此为了减少光污染我们在不需要照明的时候就不应该使用故选B解析：选C　细节理解题根据第五段最后一句可知光污染影响我们赖以生存的空气影响我们的生活质量故C项正确根据第六段第二句中“Thousands of birds die each year”可知A项错误；B项在文中没有提到；根据第二段倒数第二句可知D项错误解析：选D　推理判断题根据倒数第二段第三句“It has been long known ... towards the sea.”可推知小海龟在爬向海滩时误将人造光源当成了自然光源从而迷失了方向由此可推知一些动物是靠自然光源来指引其方向的故D项正确解析：选B　推理判断题根据最后一段最后一句可知接下来作者会列举一些有助于减少光污染的方法故选BC

　　In the United States alone，over 100 million cellphones are thrown away each year.Cellphones are part of a growing mountain of electronic waste like computers and personal digital assistants.The electronic waste stream is increasing three times faster than traditional garbage as a whole.

　　Electronic devices contain valuable metals such as gold and silver.A Swiss study reported that while the weight of electronic goods represented by precious metals was relatively small in comparison to total waste，the concentration(含量)of gold and other precious metals was higher in socalled ewaste than in naturally occurring minerals.