题目内容
12. The building (build) next year is a lab.
12. to be built
Most of us are used to seasons. Each year,spring follows winter,which follows autumn,which follows summer,which follows spring. And winter is colder than summer. But the earth goes through temperature cycles over much longer periods than those that we experience. Between 65,000 and 35,000 years ago,the planet was much colder than it is now. During that time the temperature also changed a lot? with periods of warming and cooling. Ice mel?ted during the warm periods,which made sea levels rise. Water froze again during the cold periods.
A new study fromSwitzerlandmakes it clear where ice sheets (冰川) melted during the ice age. It now seems that the ice melted at both ends of the earth,rather than just in either northern or southern regions.
This surprised the researchers from the University of Bern. Scientists have long assumed that most of the ice that melted was in the northern hemi?sphere (半球) during the 30,000-year long ice age. That belief was held because the north pole is surrounded by land,while the south pole is surrounded by the Antarctic ocean. It is easier for ice sheets to grow on land. If surrounded by sea the ice can easily just slip into the ocean instead of building up.
The researchers used a computer model to look at ways the ice could melt and how it might affect sea levels. They compared these results to evidence of how temperatures and currents actually changed during that time. The model showed that if it was only in the northern hemisphere that ice melted,there would have been a bigger impact (影响) on ocean currents and sea tempera?tures than what actually happened. Studies suggest that melting just in the southern hemisphere would have been impossible,too. The only reasonable conclusion,the scientists could make,was that ice melted equally in the north and the south.
It is still a mystery as to what caused the temperature changes that caused the ice to melt.
1. The north pole is surrounded by land,while the south pole is surrounded by the Antarctic ocean. So scientists thought that.
A. most of the ice melted in the northern hemisphere
B. most of the ice melted in the southern hemisphere
C. the north pole is colder than the south pole
D. the south pole is colder than the north pole
2. We can infer from the passage .
A. the ice can easily just slip into the ocean
B. volcanoes caused the ice to melt
C. melting just in the northern hemisphere would have been impossible
D. researchers often use the computer models to help their research work
3. The scientists are not sure .
A. how long the ice age lasted
B. where ice sheets melted during the ice age
C. what caused the temperature changes
D. what the earth is made up of
4. Which of the following is the best title for the passage?
A. A computer model
B. Studies show ice melted equally in the north and the south during the ice age
C. Most of the ice melted in the northern hemisphere during the 30 ,000-year long ice age
D. A survey result
She is widely seen as proof that good looks can last forever. But,at nearly 500 years of age,time is catching up with the Mona Lisa*
The health of the famous picture,painted by Leonardo da Vinci in 1505,is getting worse by the year,according to the Louvre Museum where it is housed.
"The thin,wooden panel on which the Mona Lisa is painted in oil has changed shape since experts checked it two years ago," the museum said. Vis?itors have noticed changes but repairing the world's most famous painting is not easy. Experts are not sure about the materials the Italian artist used and their current chemical state.
Nearly 6 million people go to see the Mona Lisa every year,many attrac?ted by the mystery of her smile. "It is very interesting that when you're not loo?king at her,she seems to be smiling,and then you look at her and she stops," said Professor Margaret Livingstone of Harvard University. "It's because di?rect vision (视觉) is excellent at picking up details,but less suited to looking at shadows. Da Vinci painted the smile in shadows."
However,the actual history of the Mona Lisa is just as mysterious as the smile. Da Vinci himself loved it so much that he always carried it with him,until it was eventually sold to France's King Francis I in 1519.
In 1911,the painting was stolen from the Louvre by a former employee,who took it out of the museum,hidden under his coat. He said he planned to return it to Italy. The painting was sent back to France two years later. Dur?ing World War H,French hid the painting in small towns to keep it out of the hands of German forces.
1. We can infer from the text that .
A. the Mona Lisa is proved to be able to last another 500 years
B. Mona Lisa's beauty is fading gradually with 500 years passing by
C. the Mona Lisa has been catching people's wide attention in the past 500 years
D. the Mona Lisa does not look out of date though painted 500 years ago
2. Which of the following is TRUE about the Mona Lisa ?
A. It was once taken away and hidden up by German forces.
B. Its painter himself loved it greatly and always kept it in a shade.
C. Mona Lisa stops smiling when you look at her wanting to see her smiles.
D. King Francis I bought it and then returned it to Italy.
3. Choose the right order about the happenings onto the Mona Lisa.
a. It was stolen from the Louvre.
b. Its painter sold it to King Francis I .
c. Its state of health was checked.
d. It was returned to France and housed in the Louvre Museum.
e. It was hidden and protected against Germans.
A. b-a-d-e-c B. d-e-c- ba C. d-a-e-c-b D. bcad* e
4. It may add to the difficulty in repairing the painting that .
A. experts haven't noticed changes in its shape as visitors do
B. it is likely to be stolen again when it's under repair
C. it is uncertain which country,Italy or France,should take charge
D. experts aren't sure about the materials and the chemical state of its oil paint
5. Your talk is a little aside from the s of our discussion.
5. Time permits,we will go and visit the Great Wall.
7. Jack is good at (make) kites.
6. He (计算) his gains and losses of money and the result was a minus.
10. The police are searching for a gang of (criminal) .
9. I don't like the way that foreign foods are (prepare) .
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