问题:
[单选题]【2018年真题】It is estimated that by 2020 the concentration of carbon dioxide will be nearly twice and it is now. A.twice than it isB.that it is twiceC.than it is twiceD.twice what it is
答案解析:
您可能感兴趣的问题
- Effect of the Great Depression It is difficult to measure the human cost of the Great Depression. T
- Robot Even before the first robot was built, the subject of robotics was controversial. The word ro
- Globalization for Change in Higher Education What is globalization and how does it affect higher ed
- Parliamentary Elections in Afghanistan For the first time in three decades Afghanistan is holding p
- 尾气污染 近年来,中国汽车保有量年平均增长达15%左右。汽车总量剧增,大量排放有害气体,成为危害国人身心健康的“无形杀手”。据统计,在全国总死亡人数中,呼吸系统疾病占22.64%,居死亡人数第一位,
- 中国海洋事业的发展 海洋覆盖了地球表面的71%,是全球生命支持系统的一个基本组成部分,也是资源的宝库,环境的重要调节器。人类社会的发展必然会越来越多地依赖海洋。 二十一世纪是人类开发利用海洋的新世
- 中国教育 政府已对全国农村义务教育阶段学生全部免除学杂费、全部免费提供教科书,对家庭经济困难寄宿生提供生活补助,使1.5亿学生和780万名家庭经济困难寄宿生受益。西部地区如期完成了基本普及九年义务教
- Political cartoons often convey messages by mocking a particular type of personality or institution.
- The word “it” underlined in Paragraph 2 refers to __________.
- According to the passage, what changed children’s publishing in 1774?