[解析]
(1)A.词义推断题.由后面的caused by the earthquake how to provide temporary shelter for so many people.给被地震影响的人们提供临时住所,可知这是艰难的任务.所以A选项正确.
(2)B.细节理解题.根据第五段China is making great efforts to deal with a formidable task caused by the earthquake how to provide temporary shelter for so many people.The article said that many tents have been built;and food and medical care are provided to the people whose lives have been completely disrupted(搅乱)by the earthquake.中国正在努力应对一项由地震引起的艰巨的任务﹣﹣为如此多的人提供临时住所.文章说,建了很多帐篷并提供食品和医疗保健给那些生活已经完全搅乱的人,可知为灾民提供临时住所和食物是最难并且重要的,所以B选项正确.
(3)A.主旨归纳题.通读全文可知外国媒体赞扬中国的抗震救灾工作.故A选项正确.
(4)D.推理判断题.根据文章最后一段The ongoing search and rescue action are still encouraged by one unexpected survivor after another,一个接一个的意外生还者仍然鼓舞着正在进行的搜救行动,可知搜救行动并未停止,D错误,所以选D选项.