D．push

　　【解析】　根据前面的Teach him gently可知妈妈希望世界温柔地教孩子，但不要宠坏孩子。

　　【答案】　B

　　20．A.heat

　　B．burn

　　C．test

　　D．exercise

　　【解析】　只有大火的考验才能炼成钢。

　　【答案】　C

　　.阅读理解

　　Down on the beach of Dover, 56­year­old Channel swimmer Jackie Cobell bravely set off for Calais. The time was 6：40 am. 28 hours and 44 minutes later the exhausted, successful mother from Kent crawled (爬行) to the shore and walked proudly into the record books. After five years in training, Mrs Cobell became the slowest person to cross the Channel under her own steam. The previous record for the slowest crossing, set by Henry Sullivan at 26 hours and 50 minutes, has stood for 87 years before Mrs Cobell started at Dover Saturday morning.

　　She had struggled through changing tides that swept her first one way, then the other. It turned the 21­mile crossing into a 65­mile one. She declared, “Time and tide wait for no man－and they certainly didn't wait for me. I was fully expecting it to get dark before I got to Calais but I never imagined I'd also see the dawn again. But I wasn't going to give up. ”

　　Her feat(壮举) raised more than $2, 000 in charity sponsorship for research into Huntingdon's disease, a sum that was continuing to grow as news of her achievement spread. That was why she did it. “I don't really know myself, ” she said. “ I just kept thinking of all the people I'd be letting down if I stopped. ”

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