六级模拟题。
Passage Two
Questions 26 to 30 are based on the following passage:
Scientists have long believed one way to stop the Earth’s atmosphere from warming is by planting more trees.The idea is that more trees will take in or absorb some of the carbon dioxide in the atmosphere.Carbon dioxide is a gas released by cars,factories and other human activities.The gas traps heat in the Earth’s atmosphere,which warms the planet.However,two new studies have found that trees may not be as helpful in reducing carbon dioxide as had been thought.
The first study was done at Duke University in Durham, North Carolina. Researchers pumped extra carbon dioxide into a test area where pine trees were growing. The trees grew thirty-four percent faster during the first three years. However, in time, the trees slowed to about their normal growth rate. The scientists say this is because trees need other nutrients, such as nitrogen.
In the second study, researchers from ;Duke and Bowdoin College in Brunswick, Maine examined the soil around trees. They discovered that as the leaves broke down into the soil, all the carbon was not trapped in the soil. Much of it was released into the atmosphere as carbon dioxide.
The findings of the two studies were published last month in Nature magazine. They suggest there is limited value in planting trees to reduce the carbon dioxide pollution in the atmosphere.
Forest planting has been a part of negotiations on a world agreement to reduce greenhouse gases that scientists believe cause global warming. The United States, Canada, Japan and some other industrial countries have supported the idea. But this new research suggests the idea is not as effective as environmental activists had thought. Scientist Ram Oren of Duke University led the study on tree growth. He says that earlier estimates on the ability of forests to absorb carbon dioxide were overly hopeful.
Some scientists not involved in the studies say the research provides some of the first evidence on how trees react to carbon dioxide. Other scientists say the research disputes a belief among some coal and power companies. The companies say that rising levels of carbon dioxide in the atmosphere will not create harmful global warming. Instead, they say it will increase forests and other plants.
26.What is the purpose of this passage?
A) Introduce some new ideas about the relationship between trees and carbon dioxide.
B) Introduce recent condition of global industrial pollution.
C) Call on people to plant more trees to reduce greenhouse gases.
D) Point out that power companies should be responsible for the rising levels of carbon dioxide.
27. Why researchers put trees in extra carbon dioxide in the first study?
A) To learn whether trees can still absorb carbon dioxide under extreme conditions.
B) To get more oxygen from these trees.
C) To evaluate the maximum carbon dioxide that trees can absorb.
D) To see the growth rate of these trees.
28.What happened to the leaves falling from the trees in the second study?
A)They broke down and the main parts turned into oxygen.
B)They broke down and the carbon content had mainly turned into carbon dioxide.
C)They broke down and the carbon content was mainly absorbed in the soil.
D)They absorbed more carbon dioxide.
29.Scientist Ram Oren is of the opinion that common beliefs of the tree’s ability to absorb carbon dioxide are____.
A) biased
B) insightful
C) overoptimistic
D) totally wrong
30.The word “it” (Line 7, Para.6) probably refers to ____.
A) carbon dioxide
B) nitrogen
C) atmosphere
D) coal
Passage Three
Questions 31 to 35 are based on the following passage:
An American scientist has found that many images of dinosaurs may be wrong. For years, pictures of the ancient creatures have shown their nose openings near the top of the head. The new study suggests the dinosaurs’ nostrils were just above the mouth.
Dinosaurs used their nostrils to breathe,smell and control their body temperature.The new theory could help explain how the huge creatures were able to survive by using their sense of smell to find food,a mate and possible enemies.
Lawrence Witmer of Ohio University in Athens,Ohio led the study.The publication science reported his findings.
Many of the early dinosaur remains recovered by scientists were from huge creatures called sauropods. Scientists believed that sauropods must have lived in water because their bodies were so huge and their necks were so long.
Nostrils high on the head would have permitted the dinosaurs to breathe while partly under water. The discovery of a sauropod head bone in 1884 added support for this belief. The skull had a large hole at the top of the head.
Professor Witmer says experts learned years later that sauropods generally were not sea creatures. But he says the earlier theory about nostril position was extended to other dinosaurs.
Only dinosaur bones have survived as fossil remains. Scientists ha 该是增长而不是减少。
77.supportssupport
因为前面跟的是复数名词。
78.reproveoppose
因为前面跟的是赞成，又有一个But，因此应该是反对oppose。
79.establishestablished
因为前面是recently因此应该是过去式。
80.requirementrequirements
因为要求肯定不止一个,因此应该用复数形式。
Part Ⅴ
参考范文：
Choosing the right career is very important. Most of us spend a great part of our lives at our jobs. For that reason we should try to find out what our talents are and how we use them. Therefore, the most important thing is how to find which kind of career suits us most。
There are several ways which can help us in the career choice. First, we should know where our interest lies in. Then we can do some aptitude tests, interview with experts and study books in our field interest. Once we find something fit for us, we should try to do it whole heartedly.
As for me, I am interested in dealing with people and I want to find a place in personnel management or public relations. I am studying courses in these aspects now and I think I can fulfill my dream one day.
本套试卷测试语言重点
10个重点单词：
conviction: 深信、确信
legitimate: 合法的
inherently: 天生的 rotate:旋转
obscure: 模糊的、不起眼的 vigor: 活力
allusion: 暗指、间接提到 accurate: 精确的
estimate: 估计 compensation: 补偿
4个重点词组：
for fear that: 唯恐 resort to: 诉诸于
find fault with: 找茬、挑错 stand the chance of: 有……机会
