题目
题型：同步题难度：来源：
What are the limits (极限) of human body? The BBC"s Focus magazine has some answers.
How cold can you stand?
Normal body temperature is around 37℃. At 35℃ you"re unable to write your name. Even walking is very
difficult. At 33℃ you may find it difficult to think, understand and form (形成) opinions properly. By the time
you have cooled to 20℃, your heart would have stopped beating. Limit: 0℃. Ice would form in your tissues
(纤维组织), killing all the cells.
How spicy can you eat?
There is capsaicin (辣椒素) in many foods. The more capsaicin, the hotter the dishes are. If you"re healthy
enough, you can survive (存活) eating a teaspoon of pure capsaicin. But you would find it impossible to eat
anything else for a few hours. Limit: 5g capsaicin.
How fast can you run?
The fastest man in the world is Asafa Powell. The runner finished the 100m in 9. 74 seconds in 2007. This
gives an average (平均的) speed of 36. 96km/h. Top runners are at their fastest around 80 metres, so a runner"s
greatest speed may reach 43.06km/h. Limit: 43.06km/h.
How loud is too loud?
The loudest sound you can hear is 168 dB (分贝). Sound louder than that may do harm to your ears. The
loudest sound ever recorded was the eruption of Krakatoa (卡拉卡托火山爆发) in 1883. It was 180 dB, 160km
away.
Limit: 168 dB
根据短文内容，回答问题。
1. At what temperature will your cells die?
________________________________
2. What will happen if you eat a teaspoon of pure capsaicin?
________________________________
3. How fast can a runner run at most?
________________________________
4. What sound can be heard by your ears?
________________________________
5. Where can you read such an article?
________________________________
答案
2. I won"t be able to eat anything else for a few hours.
3. 43.06km/h.
4. Sound which is lower than 168dB.
5. In a science magazine.
答案不唯一
核心考点
试题【任务型阅读。 What are the limits (极限) of human body? The BBC"s Focus magazine has 】；主要考察你对教育文化类等知识点的理解。[详细]
举一反三
a garden, and on the table is a piece of blue cardboard (硬纸版) with a drop of syrup (糖浆) on it. After a short
time, bees come to the syrup. The bees then fly to their hive (蜂房) and give the syrup to other bees in the
hive. Then they return to the feeding-place which they have found. After a while, the blue cardboard with the
syrup on it is taken away. Instead of this card, a blue card is now put on the left side of the first feeding-place
and a red card to its right. These new cards have no syrup on them. Very soon bees arrive again, and fly straight
to the blue card. None go to the red card.
B. Three: two blue and one red
C. Three: one blue and two red
D. Four: two blue and two red
B. the new blue card with no syrup on it
C. the empty space where the original (原先的) blue card was
D. the new blue card with syrup on it on the left of the red card
B. can see colors
C. can not see blue
D. cannot see red
B. Bees Love Syrup
C. Bees, Color and Syrup
D. Can Bees See Color?
of the world. The satellites take pictures of the atmosphere (大气), because this is where the weather forms
(形成). They send these pictures to the weather stations. So meteorologists (气象学家) can see the
weather of any part of the world. From the pictures, the scientists can often say how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive
new pictures, the meteorologists compare (比较) them with earlier ones. Perhaps they may find that the clouds
have changed during the last few hours. This may mean that the weather on the ground may soon change, too.
In their next weather forecast, the meteorologists can say this.
So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists
could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days.
Soon, perhaps, they may be able to forecast the weather for a week or more ahead (提前).
B. in the atmosphere
C. above the ground
D. above space
B. clouds form there
C. the weather forms there
D. the pictures can forecast the weather
B. after they have compared new satellite pictures with earlier ones
C. before they received satellite pictures
D. during they study satellite pictures
B. two days
C. five days
D. seven days or even longer
B. receiving pictures of the atmosphere
C. doing other work in many ways
D. weather forecasting
heavy. The snow on the bottom pressed (挤压) together, it became ice.
The ice was very wide and thick. It began to move down the mountain. It was like a river of ice. It was a
glacier (冰河).
Sometimes the glacier moved only a few inches (英寸) each day. As it moved, it took rocks and dirt with it.
It changed the land. In some places, it left hills. In some places, when the glacier melted, it made rivers and
lakes.
A million years ago, there were many big glaciers. Glaciers covered many parts of the world. The glaciers
changed the land.
Glaciers are still at work today. A glacier in the north of Canada is cutting a new path (路) down the side of
a mountain. This glacier will change the land, too.
B. melted
C. became ice
D. turned to rain
3. The story says, "The snow did not melt. It became deep and heavy". The word "it" means .
B. Glaciers do not change the land as they move over it.
C. Glaciers are found only in warm places.
B. Sometimes the glacier moved over ten miles each day.
C. Sometimes the glacier moved only a few inches each day.
B. the high land never changes
C. glaciers changed the land
| Country | Soviet Union (苏联) | The U.S.A | China |
| Date | April 12, 1961 | May 5, 1961 | October 15, 2003 |
| Astronaut | Yuri Gagarin | Alan Shepherd | Yang Liwei |
| Age | 27 | 38 | 38 |
| Spaceship | Vostok 1 | Mercury 3 | Shenzhou V |
| Flight Time | 1 hour and 48 minutes | 15 minutes | 21 hours |
| Height (高度) | 327 km | 185 km | 343 km |
| Circles around the earth | 1 | 0 | 14 |
| 根据短文内容，判断正(T)误(F)。 | |||
| Many young people can use a computer, but few of them know how to look after it. Remember the following tips when you use a computer. Keep your computer in a cool, dry room. Too much or too little heat is bad for computers. Damp (潮湿) is also bad for them. Most computers work best at a temperature of 5-10 degrees centigrade (摄氏度). Do not let people smoke cigarettes near your computer. Smoke of all kinds is very bad for many parts of the computer and can cause many problems. Do not eat or drink when you are near your computer. Pieces of food or drops of water on the keyboard can also cause many problems. Make sure that the keyboard and the screen are the correct height for you. If they are not correct, you will get backache. Make sure the screen is the correct distance from your eyes. If you wear glasses, make sure these glasses are correct for using with the computer. Some people use a different pair of glasses when they use a computer. Keep your screen clean and do not have it too bright. A dirty screen can hurt your eyes. A very bright screen can also be bad for your eyes. If you can afford one, buy a computer screen. It will be better for you than using the screen of a TV set. Never use any software (软件) that you don"t know whether they are clean or not. You must be careful because some software can bring viruses (病毒) into the computer. If your computer has viruses, it can"t work or even breaks down. | |||
| ( )1. According to this passage, most young people can control computers well while paying little attention to the keeping of them. ( )2. Putting the keyboard and the screen too high means you don"t have to look at your manuscript (手稿) while typing. ( )3. Some people use a different pair of glasses when they use a computer because they want to protect their eyes. ( )4. It"s better to use a TV set screen instead of a computer one because a TV set is usually larger than a computer one. ( )5. "Clean software" means the software without any viruses. |