题目内容
Recently a committee of the National Academy of Sciences in
The best information about climate in the past comes from tests of ice many kilometers deep in Antarctica and Greenland .These tests show that levels of carbon dioxide today are the highest ever measured .These findings have led scientists to believe that carbon dioxide is a major cause of climate warming.
Carbon dioxide is released into the atmosphere when fuel is burned. Oil ,coal and wood are all fuels that release the gas .When biological waste breaks down ,it also releases carbon dioxide.
However ,plants use carbon dioxide in the process called photosynthesis. This process provides food for almost all life on Earth. Some groups that support burning oil and coal want to increase the amount of carbon dioxide in the atmosphere . They oppose international efforts to control carbon dioxide.
Some scientists believe that forests and trees are able to capture large amounts of carbon dioxide from the air. Some groups even suggest that an increase in carbon dioxide could cause plants to grow faster.
A recent study in
72．Which one is NOT mentioned in this passage that can be the source of carbon dioxide?
A．Oil B．Trees C．Wood D．Soil
73．The committee report of National Academy of sciences in
A．ice from Antarctica and Greenland is appropriate to show the change
B．carbon dioxide is released mainly from the fuel
C．level of carbon dioxide increases with global temperatures
D．carbon dioxide is helpful for tree growth
74．According to this passage ,those people disagree with the control of carbon dioxide because .
A．they think that carbon is beneficial for plant growth
B．they want to use more fuels that can send out carbon dioxide
C．they think it will destroy the natural balance of gases in the world
D．they think carbon dioxide is not the main reason for global warming
75．Those studies carried out in
A．more carbon dioxide is beneficial for trees’ growth for many decades
B．trees’ function for absorbing carbon dioxide is limited
C．carbon dioxide is the main cause for global warming
D．leaves falling from trees can send out more oxygen
DCBB
Mary is going on a diet . as she has put on _______recently.
| A．weights | B．weight | C．a weight | D．the weight |
Recently, a study was carried out to determine who was the greatest American president．Sixty-five presidential historians took part in it, and they judged the past forty-two American leaders based on ten leadership qual
ities, including public persuasiveness (信服), crisis leadership, management of the economy, moral leadership, and conduct of international relations．The historians also looked at administrative (管理) ability, relations with Congress, ability to set goals, and the pursuit of equ
al justice fo
r all．Finally, the experts took into consideration the historical period in which the president lived．
The historians chose Abraham Lincoln as American’s greatest president．He had also been named best president in a similar study in 2000．Abraham Linco
ln was the president who led the nation through the Civil 
War in the 1860s, and was able to unite it in the end．He also took the first steps to abolish slavery in America．
Edna Medford, a professor of history at Howard University in Washington, D.C., was an adviser on this study and the earlier one．She says Abraham Lincoln is seen to represent the values the nation most honors, such as truthfulness, moderation, and respect for human rights．
The historians put American’s first president, George Washington, second on the list, while Franklin D．Roosevelt, Theodore Roosevelt, and Harry Truman follow in that order．John F．Kennedy, the country’s first Roman Catholic president, is sixth on the list．Like Lincoln, Kennedy was murdered while in office．
Among recent presidents, Ronald Reagan was named the tenth best and Bill Clinton rated fifteenth, while the historians put former president George W．Bush at number thirty
-six．His father, George H.W．Bush, did much better, being placed at number eighteen．
【小题1】We learn from the text that ___________．
| A．this is the second time that Abraham Lincoln has been chosen as America’s greatest president |
| B．Edna Medford didn’t take part in the study conducted in 2000． |
| C．George H.W．Bush was thought to have done worse in office than George W．Bush |
| D．Harry Truman was rated the fourth-best president by the study |
a．Being able to persuade the public
b．Taking effective measures during a financial crisis．
c．Balancing home life and career．
d．Pursuing equal justice for all．
| A．a,b,c | B．b,c,d | C．a,b,d | D．a,c,d |
| A．John F．Kennedy | B．George Washington |
| C．Bill Clinton | D．George W．Bush |
y about ________．| A．the ten qualities a great president needs |
| B．a study of American presidents |
| C．the values the American nation honors most |
| D．how Abraham Lincoln improved the country |
The Iceberg Was Only Part ofIt
What doomed the Titanic is well known, at least in outline. On a moonless night of April 15, 1912, the ship hit an iceberg in the North Atlantic ,with 1,500 lives lost.
A century later many people presented new theories to explain the real reason for the disaster. Now two new studies argue that rare states of nature played major roles in the disaster.
The first says Earth’s nearness to the Moon and the Sun — a proximity not matched in more than 1,000 years — resulted in record tides that help explain why the Titanic met with so much ice, including the fatal iceberg.
Recently, a team of researchers found an apparent explanation in the heavens. They discovered that Earth had come unusually close to the Sun and Moon that winter, enhancing their gravitational pulls on the ocean and producing record tides. The rare orbits took place between December 1911 and February 1912 — about two months before the disaster came about. The researchers suggest that the high tides refloated masses of icebergs traditionally stuck along the coastlines of Labrador and Newfoundland and sent them adrift into the North Atlantic shipping lanes.
And a second, put forward by a Titanic historian from Britain, contends that the icy waters created ideal conditions for an unusual type of mirage(海市蜃楼) that hid icebergs from lookouts whose duty was to watch carefully for danger ahead and confused a nearby ship as to the liner’s identity, delaying rescue efforts for hours.
Most people know mirages as natural phenomena caused when hot air near the Earth’s surface bends light rays upward. In a desert, the effect prompts lost travelers to mistake patches of blue sky for pools of water. But another kind of mirage occurs when cold air bends light rays downward. In that case, observers can see objects and settings far over the horizon. The images often undergo quick distortions — not unlike the wavy reflections in a funhouse mirror.
Now, scholars of the Titanic are debating these new theories. Some have different opinions on it. Over all, though, many experts are applauding the fresh perspectives.
1.The underlined word "It" in the title probably refers to _______.
|
A．the Titanic |
B．the cause of the disaster |
|
C．the record tide |
D．an unusual mirage |
2.According to Theory First, what was the right chain of causes leading to the Titanic’s disaster?
① record tides’ forming and icebergs’ being refloated
② icebergs’ being drifted into the North Atlantic shipping lanes
③ the Earth’s strange closing to the Sun and the Moon
④ increasing of the gravitational force on the ocean
|
A．①→②→③→④ |
B．②→③→④→① |
C．④→③→②→① |
D．③→④→①→② |
3.According to Theory Second, the disaster happened to the Titanic mainly because______.
|
A．the freezing weather made the watcher not be able to watch clear |
|
B．the mirage made the watcher not find icebergs and a nearby ship delay rescuing |
|
C．the mirage on the sea attracted the watcher and made him forget his work |
|
D．the high tides drove the icebergs float so fast that the watcher didn’t respond to them |
4.What is the chief function of the sixth paragraph?
|
A．to explain to the readers the ways of the mirage forming |
|
B．to infer the possibility of the mirage appearing |
|
C．to summarize the various kinds of the mirage |
|
D．to analyze the conditions of the mirage arising |
5.This passage is organized generally in the pattern of________.
|
A．comparison and contrast |
B．conclusion and proof |
|
C．time and events |
D．definition and classification（分类) |
Will it matter if you don't take your breakfast? Recently a test was given in the United States. Those tested included people of different ages, from 12 to 83. During the experiment, these people were given all kinds of breakfasts, and sometimes they got no breakfast at all. Special tests were set up to see how well their bodies worked when they had eaten a certain kind of breakfast. The results show that if a person eats a proper breakfast, he or she will work with better effect than if he or she has no breakfast. This fact appears to be especially true if a person works with his brains. If a student eats fruit, eggs, bread and milk before going to school, he will learn more quickly and listen with more attention to class.
Opposite to what many people believe, if you don't eat breakfast, you will not lose weight. This is because people become so hungry at noon that they eat too much for lunch, and end up gaining weight instead of losing. You will probably lose more weight if you reduce your other meals.
1.During the test, those who were tested were given ________.
|
A．no breakfast at all |
B．very rich breakfast |
|
C．little food for breakfast |
D．different breakfasts or none |
2.The results of the test show that ________.
|
A．breakfast has great effect (影响) on work and studies |
|
B．breakfast has little to do with a person’s work |
|
C．a person will work better if he has a simple breakfast |
|
D．those working with brains should have much for breakfast |
3.The passage mentions that many people believe that if you don't eat breakfast, you will ____.
|
A．lose weight |
B．not lose weight |
C．be healthier |
D．gain a lot of weight |
4.Which of the following is not true according to the passage?
|
A．Poor breakfast affects those who work with brains. |
|
B．Morning diet may cause one to get fatter. |
|
C．Reducing lunch and supper is of less value in weight losing. |
|
D．Eating less in lunch and supper may help to lose weight. |