2019学年度北师大版选修七Unit21 Human Biology Section ⅠWarm-up & Lesson 1 Super Athletes学案设计(4页word版)
2019学年度北师大版选修七Unit21 Human Biology Section ⅠWarm-up & Lesson 1 Super Athletes学案设计(4页word版)第3页

8.(2013北京高考,27)Many countries are now setting up national parks     animals and plants can be protected.

A. when B. which

C. whose D. where

提示:考查定语从句。句意:很多国家正在建立国家公园,在这里动植物可以得到保护。where引导的定语从句修饰national parks, where在从句中作地点状语。

答案:D

9.The slave-owner had the right to beat,    or even kill the slaves at will in the south of America at that time.

A. steal B. take

C. rob D. abuse

提示:句意:当时, 在美国的南部奴隶主有权力任意击打、虐待甚至杀死奴隶。abuse"虐待,辱骂",符合句意。

答案:D

10.Take two pills every six hours.If you still feel uncomfortable,    medical advice.

A. seek B. observe

C. request D. ignore

提示:句意:每六小时服两片药,如果你仍感到不舒服的话,寻求医疗建议。seek"征求;寻求";observe"观察;遵守;庆祝";request"请求";ignore"不理睬;忽视"。

答案:A

Ⅳ.阅读理解

Ever since they were first put on the market in the early 1990s,genetically modified (GM,转基因) foods have been increasingly developed and marketed in many countries in th e world, mainly on the basis of their promise to end the worldwide food crisis. But can GM technology solve world hunger problem s? Even if it would, is it the best solution?

Despite what it promises, GM technology actually has not increased the production potential(潜力) of any crop. In fact, studies show the most widely grown GM crop.GM soybeans, has suffered reduced productivity. For instance, a report that analysed nearly two decades of research on major GM food crops shows that GM engineering has failed to significantly increase US crop production.

Something else, however, has been on the rise. While GM seeds are expensive, GM companies tell farmers that they will make good profits by saving money on pesticide s(杀虫剂).On the contrary, US government data show that GM crops in the US have produced an overall increase in pesticide use compared to traditional crops. "The promise was that you could use fewer chemicals and boost production. But neither is true," said Bill Christison, President of the US National Family Farm Coalition.

At the same time, the authors of the book World Hunger, Twelve Myths argue that there actually is more than enough food in the world and that the hunger crisis is not caused by production, but by problems in food distribution and politics. These indeed deserve our efforts and money. Meanwhile, the rise in food prices results from the increased use of crops for fuel rather than food, according to a 2008 World Bank report.