楼主寂静13题目测是PREP08 CR2 81题 -- by 会员 denniswang0907 (2012/11/17 15:55:11)
81. (24344-!-item-!-188;#058&000867) In Arumville, among those young children with elevated levels of lead in their blood, few live in houses containing lead-based paint, but many live in areas where vehicular traffic is heavy. These children's elevated blood-lead levels probably result from lead added to gasoline, since, although gasoline sold in and around Arumville has been lead-free since 1990, lead from vehicle exhaust remains in the soil for many years. Which of the following, if true, most strengthens the argument? A. Sales of lead-based paint for use in homes was banned in Arumville in 1977. B. Vehicle traffic in most residential areas of Arumville is heavier today than it was twenty years ago. C. Some lead in the soil comes from deteriorating lead-based paint on the exteriors of buildings. D. In Arumville, children's blood-lead levels typically rise during the warm summer months when children frequently play outdoors but not in the winter when children spend more time indoors. E. If improperly carried out, the removal of lead-based paint from older houses can significantly increase the risk that children living in such houses will ingest lead dust. 在A这个地方,孩子们的血铅含量在上升,但是在房间里面的涂料很少含铅,但是附近的交通拥挤,孩子们的血铅含量升高可能是因为汽油里面的铅。虽然从1990年开始A就要求使用无铅汽油,但是汽车尾气排放出来的铅会在土壤里保留很长时间。问加强? D选项说在A地方,孩子们的普遍血铅含量在暖和的夏天比在冬天多,因为夏天经常在户外,所以证明孩子们的铅是吸收了含铅的尾气或者土壤里面的残留靠谱! -- by 会员 longxuw (2012/11/17 17:06:39)
感觉又有点像变体···需要狗主们确认一下··· |