The heaviest snow continued to fall over large parts of China. traffic jams． A．caused B．causing C．to cause D．having caused 题目和参考答案——青夏教育精英家教网—

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The heaviest snow continued to fall over large parts of China， traffic jams．

A．caused B．causing C．to cause D．having caused

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Mary kept weighing herself to see how much ______ she was getting.

　　A. heavier B. heavy C. the heavier D. the heaviest

There are many colors in nature. But do you know if a color has weight? I think you’ll say “no”. But I am afraid you are wrong. If you don’t believe, you may do a small experiment.

　　First, put two objects with the same weight into two boxes. Then cover the box. Third, wrap one box with a red piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier.

　　Why do you think so? A scientist found that different colors have different weight in a man’s mind. So he did man tests and at last he got the result. That is to say, every color has its own weight in our mind and their order is the same. The heaviest color is red, then blue, green, orange, yellow and white.

　　The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for a kind of light with a certain wavelength. It reaches our brain through sense organs (感觉器官).

According to this discovery, scientists say that people accept the colors they like, and refuse the colors they hate. So your body and mind will be healthy by using the colors you like. Or you’ll be nervous or even get ill. For example, if you stay in a room with red windows, wallpapers and furniture for two hours, you’ll feel you have been there for four hours. But if the room is blue, you’ll feel you have been there for only an hour. Another example, if a person walks out of a red room and into a blue room, his temperature will fall. That means our body temperature will change with different colors.

The purpose of the second paragraph is to tell us ___________.

A. a red box is heavier than a white one

B. a color has weight in one’s mind

C. white paper is lighter than red paper

D. you can know the weight of a color by holding it

Why did the scientist say colors have smell?

A. Because people can sense the light from colors.

B. Because we can smell colors with our nose.

C. Because every color has its own sweet smell.

D. Because every color can give off light of the same length.

If a person walks from a blue room to a red room, his body temperature will ___________.

A. rise B. fall C. stay the same D. change now and then

It can be implied from the text that ___________.

A. colors have orders in weight

B. colors can change the weight of an object

C. people would stay longer in a room with red windows

D. colors can affect our mood and health

This passage is probably a ___________.

A. book review B. fiction novel C. fairy tale D. science report

The place_______the bridge is supposed to be built should be_______the cross-river traffic is the heaviest.

A.which;where B.at which;which

C.at which;where D.which;in which

C
Recently scientists have worked out a way to judge roughly where a person has lived using strands(缕) of hair, a technique that could help track the movements of criminal suspects or unidentified bodies .
The method depends on measuring how chemical variations in drinking water show up in people’s hair.
While U.S diet is relatively identical, water supplies vary. The differences result from weather patterns. The chemical composition of rainfall changes slightly as clouds move.
Most hydrogen and oxygen atoms in water are stable , but traces of both elements are also present as heavier isotopes (同位素) . The heaviest raid（列阵）falls first. As a result, storms that form over the Pacific deliver heavier water to California than to Utah.
Similar patterns exist throughout the U.S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can establish a geographic timeline. Each inch of hair corresponds to about two months.
Cerling’s team collected tap water samples from 600 cities and constructed a frame of the regional differences. They checked the accuracy of the map by testing 200 hair samples collected from 65 barber shops. They were able to accurately place the hair samples in broad regions roughly corresponding to the movement of raid systems.
“It’s not good for pinpointing (精确定位),” he said. “It’s good for ruling out many possibilities.”
64. What can we learn from the passage about the latest discovery?
A. One’s hair growth has to do with the amount of water they drink.
B. A person’s hair may reveal where they have lived.
C. Hair analysis identifies criminal suspects accurately.
D. The chemical composition of hair varies from person to person.
65. What does the underlined word “identical” in paragraph 3 probably mean?
A. similar B. fantastic C. beneficial D. healthy
66. What is the practical value of Cerling’s research?
A. It helps analyze the quality of water in different regions.
B. It helps the police determine where a crime is committed.
C. It helps the police narrow down possibilities in detective work.
D. It helps identify the drinking habits of the person under investigation.

Snow falls in the Earth’s extreme North and South throughout the year. However， the heaviest snowfalls have been reported in the mountains of other areas during winter. Snow is even known to fall near the Equator (赤道)，but only on the highest mountains.

Snow contains much less water than rain, but much of the water the world uses comes from snow. Melting snow provides water for rivers, electric power stations and agricultural crops. In the western United States, mountain snow provides up to seventy-five percent of all surface water supplies.

Snowfall helps to protect plants and some wild animals from winter weather. Fresh snow is made largely of air trapped among the snow crystals (晶体). Because the air has trouble moving, the movement of heat is limited. Snow also influences the movement of sound waves. The surface of the snow takes in, or absorbs, sound waves. As snow grows older or if there have been strong winds, it can become hard and flat. Then, the snow，s surface will help to send back sound waves.

Snow may be beautiful, but it can be deadly. It is responsible for the deaths of hundreds of people. Many people die in traffic accidents on roads covered with snow and ice or from being seriously stuck in the winter storm. Others die from heart attacks caused by too much physical activity out in the cold.

People may not be able to avoid living in areas where it snows often. However, they can avoid becoming victims of snowstorms. People should stop driving and stay at home until the storm has passed. People living in these areas should carry emergency supplies in their vehicle. These include food，emergency medical supplies，and extra clothing to stay warm and dry.

1.Mountain snowfall _____.

A．is heavier than that in the South and the North Poles

B．has never occurred near the Equator of the earth

C．brings less of the water the world uses than rain does

D．provides up to seventy—five percent of water supplies worldwide

2.Snow protects plants and wild animals from cold weather by _____.

A．supplying much more air B．limiting heat movement

C．absorbing strong winds D．sending back sound waves

3.Snow can be deadly mainly because it can _____.

A．cause road accidents

B．make people stuck in winter storms

C．lead to heart attacks

D．make people victims of snowstorms

4.What will the text probably tell us following the last paragraph? _.

A．How to drive during snowstorms

B．Where we can get emergency supplies

C．How to prevent heart attacks out in cold

D．Why we should stay warm and dry in winter

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