首页
登录
职称英语
[originaltext] Human beings are cutting down the world’s rain forests at the
[originaltext] Human beings are cutting down the world’s rain forests at the
游客
2024-02-25
23
管理
问题
Human beings are cutting down the world’s rain forests at the rate of 20 hectares a minute (31) . Every year, 30 million hectares of rain forests are destroyed. And at this rate, most of the world’s rain forests will disappear very soon.
The forests are cut down sometimes for wood, sometimes for farms so that crops and vegetables can be planted and sometimes to make way for roads. But the forests do not re-grow. The soil is very thin and it is soon washed away by the rain. The land is then too poor for the forests to begin to grow again.
There are a number of good reasons for saving the rainforests. Several important drugs in hospitals have come from the rain forests. Also they produce food. The rain forests are rich in wildlife, too. They cover less than 10% of the world’s land, but they contain 40%~50%of the world’s species of plants and animals (29) . The trees supply oxygen. If the rain forests are destroyed, this will change the world’s weather (30) . Temperatures will go up, sea levels will rise and there will be changes in rain and snowfall.
Today, research studies in forests in Panama, New Guinea and Indonesia may help us to find solutions to save the world’s rain forests.
选项
A、15%.
B、10%.
C、About 50%.
D、Nearly 30%.
答案
C
解析
题目问热带雨林包含了世界上多少植物品种。短文中提到"They cover less than 10% of the world’s land,but they contain 40%~50% of the world’s species of plants and animals",可见热带雨林包含了40%~50%的物种,显然C) 符合。
转载请注明原文地址:https://tihaiku.com/zcyy/3482257.html
相关试题推荐
[originaltext]Ken:Hello,Rob.Rob:Hello,Ken...HelloBarbara.Comei
[originaltext]Ken:Hello,Rob.Rob:Hello,Ken...HelloBarbara.Comei
[originaltext]W:Whereareyougoingtospendyourholidaythisyear,Bob?M:W
[originaltext]W:Whereareyougoingtospendyourholidaythisyear,Bob?M:W
[originaltext]W:Whereareyougoingtospendyourholidaythisyear,Bob?M:W
[originaltext]W:AreyougoingtoLily’spartytonight?M:Areyoukidding?Iwoul
[originaltext]W:AreyougoingtoLily’spartytonight?M:Areyoukidding?Iwoul
[originaltext]Asmoreandmorepeoplelosetheirjobs,nowisperhapsthet
[originaltext]Asmoreandmorepeoplelosetheirjobs,nowisperhapsthet
[originaltext]Inrecentyears,manyAmericansofbothsexesandvariousage
随机试题
Whatkindofaplanewasitthatcrashed?[br][originaltext]Washington--A
A.绝对值相等,正负号相同 B.绝对值相等,正负号不同 C.绝对值不等,正负
女,26岁,因急性阑尾炎,拟在连续硬膜外麻醉下行阑尾切除术。该病人硬膜外腔穿刺应
A.双肺纹理明显增多 B.双侧肺门影明显扩大伴肿大的淋巴结块影 C.双肺广泛
呋塞米没有的不良反应是A.低氯性碱中毒 B.低钾血症 C.低钠血症
《中小学教师职业道德规范》(2008年修订)要求教师要“遵循教育规律,实施素质教
2001-27.下列哪项不属于中焦病证的临床表现 A.面目俱赤B.舌蹇肢厥
26岁男性患者,突发寒战、发热39.7℃、腰痛、尿频、尿急,尿痛1周,体检两侧肋
绿色食品标志是由中国绿色食品发展中心在国家工商行政管理总局商标局正式注册的质量证
某高校外语教研室新招进五位外语老师,每位老师只教授一门外语。并且满足以下条件:(
最新回复
(
0
)