An ecosystem is a group of animals and plants living in a specific region and interacting
第1题
A.Y
B.N
C.NG
第2题
Frogs are important in the ecosystem because they control pests.
A.Y
B.N
C.NG
第4题
The aim to create Everglades National Park was to______.
A.protect the local ecosystem from damage
B.build the largest tropical wilderness
C.combine the nine parks that already existed
D.shelter migratory birds from North America
第5题
A.drastic measures
B.the ecological effects
C.the marine ecosystem
D.possible rising unemployment
第6题
The massive investment put into the constructing huge draggers resulted in ______.
A.more economic disaster areas in Newfoundland
B.the recovery of the marine ecosystem
C.the improvement of fishing practices
D.the devastating fishing
第7题
第8题
What is said about the spill occurring far below the sea?
A.It resulted in the death of birds that feed on fish.
B.It is a threat to the whole ecosystem there.
C.It is less harmful than the spill on the surface.
D.It is easy to assess the likely impacts.
第9题
What have the researchers discovered in the Arctic?
A.The ice and cold water in the region contain banned toxic chemicals.
B.Poisons stored in the region are leaking out due to global warming.
C.The amount of toxic chemicals in the region could destroy all mankind.
D.The ecosystem in the region has been changed by rising temperatures.
第10题
What does the second paragraph tell us?
A.Environmental pollution may have far-reaching consequences.
B.Any or all of these ecosystem functions may be impaired or destroyed by pollution.
C.Ecosystems perform. many important services for the earth's environment.
D.Pollution also has a great influence on natural resources.
第11题
第二节 短文理解1
阅读下面短文,从[A](Right)、[B](Wrong)、[C](Doesn't Say)三个判断中选择一个正确选项。
The Great Lakes between the US and Canada are the largest bodies of fresh water in the world. For a long time, people lived happily beside the Lakes until the countries began to build factories along the shores. Pollution was killing the Lakes; pretty soon, the Lakes' ecosystem was not right any more. Scientists knew something had to be done. So did the government. They learnt it was important to keep the ecosystem of the Lakes healthy and strong. If the Lakes dried up, the whole world would feel it. Many areas would become deserts and many animals would lose their homes and maybe die out. As a result, they set up a lab called the Great Lakes Environmental Research Laboratory to solve the problem.
The largest bodies of fresh water are between the US and Canada.
A.Right.
B.Wrong.
C.Doesn't say.