[单项选择]
Directions: There are 2 passages in this section, Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
{{B}}Passage One{{/B}}

Questions 57 to 61 are based on the following passage. Lead deposits, which accumulated in soil and snow during the 1960’s and 1970’s, were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly. A study published recently in the journal Nature shows that air A. forests get rid of lead pollution faster than expected B. lead accumulations in forests are more difficult to deal with C. lead deposits are widely distributed in the forests of the US D. the upper layers of soil in forests are easily polluted by lead emissions 查看答案 更多"Directions: There are 2 passages in"的相关试题: [单项选择] Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements, For each of them there are four choices marked A), B), C) and D). {{B}}Passage One{{/B}} Chemistry did not emerge as a science until after the scientific revolution in the seventeenth century and then only rather slowly and laboriously. But chemical knowledge is as old as history, being almost entirely concerned with the practical arts of living. Cooking is essentially a chemical process; so is the melting of metals and the administration of drugs and potions. This basic chemical knowledge, which was applied in most cases as a rule of thumb, was nevertheless dependent on previous experiment. It also served to stimulate a fundamental curiosity about the processes themselves. New information was always be A. The scientific revolution in the seventeenth century. B. Reasons that chemistry developed slowly as a science. C. The practical aspects of chemistry. D. Difficulties of organizing knowledge systematically. 查看答案 我来回答: 提交 最新试题 ●    [多选题]地方各级人民政府应当将包括消防安全布局、消防站、( ) 等内容的消防规划纳入城乡 ●    [单选题]BORA10G-X3M-ETX中SY指示灯亮红表示（ ） ●    [简答题]B-B-A-003 2 6 5 IP地址可以分为哪几类? ●    [单选题]在精神分析的人格结构中,自我遵循以下什么原则( )。 ●    [判断题]机械调平机构采用平行四边形拉杆随动调平原理,分别由拉杆、滚子链、链轮以及辅助支撑、张紧装置 ●    [单选题] 根据《刑法》,不属于票据诈骗罪的是( )。 网站地图 我要搜题网  版权所有  ©2023  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码