[外语类试卷]考博英语(完形填空)练习试卷36及答案与解析.doc
《[外语类试卷]考博英语(完形填空)练习试卷36及答案与解析.doc》由会员分享,可在线阅读,更多相关《[外语类试卷]考博英语(完形填空)练习试卷36及答案与解析.doc(10页珍藏版)》请在麦多课文档分享上搜索。
1、考博英语(完形填空)练习试卷 36及答案与解析 一、 Cloze 0 Should we care if over 150 known species of animals have【 1】 from the earth in the last fifty years? Should we be concerned that there are【 2】 thousands of species whose very existence is【 3】 endangered largely because of our activities?【 4】 , after all, is the nat
2、ural end of populations. Species are born, then【 5】 , and then die. Some live a【 6】 time, perhaps millions of years; some die more quickly. We have【 7】 the extinction of many species we know about, and we have undoubtedly sealed the【 8】 of others. In fact, there are undoubtedly many other species th
3、at have lived among us during our time on earth, but that have disappeared as a(n)【 9】 of our activities without our ever having known they existed. It is hard to explain the rationale of many of us who are concerned about such matters. I have never seen a sea whale,【 10】 I dont want them to become
4、extinct. Moreover, I felt this way long before I understood anything about how they might be an important part of an ecosystem. Possibly such feelings merely reflect the cultural attitude that it is “nice“ to wish other living things well; thus, the attitude is【 11】 I feel nice. There are, of course
5、, more rational reasons for【 12】 the extermination of any species. For one thing, the kind of attitude that encourages or sanctions the destruction of other species is a threat 【 13】 our own wellbeing. If such an attitude exists, we ourselves might【 14】 victim to it. Living things (including us) mig
6、ht be expected to fare better where there is【 15】 for life. The extinction of other species could also threaten us【 16】 by simplifying the system of which we are a part or by destroying parts of the ecosystem【 17】 which we directly rely. For example, if we continue to poison the oceans【 18】 we are w
7、illing to believe only a few bottom dwellers are affected, we might 【 19】 overstsp some critical threshold and trigger the wholesale death of plankton, thus finding ourselves without a major【 20】 of the worlds food and with our oxygen supplies dwindling. ( A) disappeared ( B) died ( C) endangered (
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
2000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 外语类 试卷 英语 填空 练习 36 答案 解析 DOC
