首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Choose the correct letter, A, B, or C. What causes coral bleaching?
Choose the correct letter, A, B, or C. What causes coral bleaching?
admin
2019-07-11
30
问题
Choose the correct letter, A, B, or C.
What causes coral bleaching?
Now listen carefully and answer Questions 31 to 40.
Questions 31-32
The Great Barrier Reef, stretching along the east coast of Australia, is the world’s largest collection of coral reefs, covering an area of around 300,000 square kilometres. The approximately 3,000 individual reefs that make up the Great Barrier Reef system are composed of over 400 different kinds of coral, the largest variety of corals found anywhere in the world. In addition, around 900 islands, ranging in size from tiny sandy cays to large continental islands covered with vegetation, are scattered throughout the area, particularly at the northern and southern ends.
Questions 33-38
Thousands of species of plants and animals live in the area. Reef habitats make up only about 7 percent of the region’s ecosystems. Other types of habitat in the area range from the shallow waters of coastal salt marshes to deep ocean habitat. Plant life in the reef habitat includes 500 different species of seaweed. The islands provide habitat for a wide variety of plant species. Those at the northern end support over 300 plant species, most of which tend to be woody, while the 200 species of plants growing on the islands at the southern end are largely herbaceous.
In addition to the 1,500 species of fish that live in and around the reefs, sea mammals also abound in the area. Among them are whales, certain species of which use the area as a breeding ground. Many types of reptiles can also be found living among and near the reefs, including crocodiles and several species of marine turtles. The former find their home in the saltwater marshes along the coastal areas, while the latter are attracted to sea grass beds. The land as well as the water teems with animal life. At least seven species of frogs, for example, inhabit the reef’s islands.
Questions 39-40
Unfortunately, this wondrous area of the world is threatened by climate change. Rising sea temperatures have led to an effect called coral bleaching, that is, large numbers of corals dying off, especially in the shallower areas of the reef. The Great Barrier Reef Marine Park Authority is attempting to find effective ways to deal with this issue that threatens the reef. One proposed solution involves shading the reef in certain areas to help keep the surrounding water temperatures down.
选项
答案
rising sea temperatures
解析
转载请注明原文地址:https://kaotiyun.com/show/bJ8O777K
本试题收录于:
雅思听力题库雅思(IELTS)分类
0
雅思听力
雅思(IELTS)
相关试题推荐
Questions28-30ChoosetheappropriatelettersA-Dandwritetheminboxes28-30onyouranswersheet.*
Questions28-30ChoosetheappropriatelettersA-Dandwritetheminboxes28-30onyouranswersheet.*
Questions28-30ChoosetheappropriatelettersA-Dandwritetheminboxes28-30onyouranswersheet.*
Questions28-30ChoosetheappropriatelettersA-Dandwritetheminboxes28-30onyouranswersheet.Questions31-36Complet
Questions28-30ChoosetheappropriatelettersA-Dandwritetheminboxes28-30onyouranswersheet.*
Questions14and15ChoosetheappropriatelettersA-Dandwritetheminboxes14and15onyouranswersheet.*
Questions14and15ChoosetheappropriatelettersA-Dandwritetheminboxes14and15onyouranswersheet.Questions20-26
Questions14and15ChoosetheappropriatelettersA-Dandwritetheminboxes14and15onyouranswersheet.*
随机试题
吸收混合气中的苯,已知y1=0.04,吸收率是80%,则Y1、Y1是()。
心源性晕厥最常见的病因是
某猪群中出现初产母猪发生流产,产木乃伊胎和死胎。公猪、经产母猪和其他阶段猪无明显可见的临床表现。此病可能是
根据有关法律规定,建设工程开工通知发出后,尚不具备开工条件的,则开工日期为()。
下列各项关于投资性房地产计提折旧或摊销的表述中正确的有()。
下列各项中,在联产品的联合成本的分离后,应按照一定的方法在各联产品之间分配使用的分配方法有()。
内蒙古五大草原中的科尔沁草原,科尔沁蒙古语是()。
一、注意事项1.本题本由给定资料与作答要求两部分组成,考试时限为150分钟。其中,阅读给定资料参考时限为40分钟,作答参考时限为110分钟。2.请在题本、答题卡指定位置上用黑色字迹的钢笔或签字笔填写自己的姓名和准考证号,并用2B铅笔在准
根据下列材料回答问题。2015年我国钟表全行业实现工业总产值约675亿元,同比增长3.2%,增速比上年同期提高1.7个百分点。全行业全年生产手表10.7亿只,同比增长3.9%,完成产值约417亿元,同比增长4.3%,增速提高1.9个百分点
Manypeopleliketotravel.Theproblemisgettingyourpettothe【C1】______.Inrecentyears,transportingpetsonflightshas
最新回复
(
0
)