18．DA项意为“不得不哭”；B项意为“应该哭”；C项意为“本来应该哭”；D项意为“简直要哭了”。根据语境可知D项正确。

　　19．B谢过店主之后，作者听了所有的歌，然后选出了能唱的那些歌 (the ones)。

　　20．C本文是关于一位残疾人在一位热心人的帮助下重新开始自己心爱的歌唱事业的故事。courage 勇气；devotion 投入；奉献；热忱；kindness 好心，善良，仁慈；亲切，友好；trust 信任。根据上下文可知C项正确。

　　.阅读理解

　　Sir Richard Branson today offered a $25,000,000 prize for scientists who find a way to save the planet from the effects of climate change.

　　Supported by the former US vice­president Al Gore and other environmentalists, the boss of Virgin Atlantic airlines called for scientists to come up with a way to take greenhouse gases out of the atmosphere.

　　“What we are doing is making sure we get the most carbon dioxide­friendly planets.We promise that 100% of profits we make from our transportation business are put into things like the prize we've offered today.We shall convince people that we are facing a threat which is urgent and there's no superhero.We have no hope of a meaningful solution unless we find a way to work together.”he said.

　　Mr Gore said global warming was man­made and was like the planet suffering from a“fever”．He said，“Humans had slipped into a way of thinking that was centered on‘short term satisfaction', and now meet the challenge of ‘transforming ourselves and changing the structures of everything we do'”．

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