题目内容:
TalkingaboutBrown'sdismalpictureofenvironmentaldegradation,theauthorthinksthat
A.hisoptimismdoesnotseemtobewell-grounded. B.toomanydepressingstatisticswerelistedinhisbook.
C.hisdescriptionoftheenvironmentalproblemslacksafocus.
D.heistryingtoforcehisoptimismonthereaders.
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答案解析: