Although cats can not see in complete darknes...

Although cats can not see in complete darkness, their eyes are much more ______ to light than human eyes.

A. brilliant        B. attractive        C. available        D. sensitive

高三英语单项填空中等难度题查看答案及解析

Although cats can not see in complete darkness, their eyes are much more ______ to light than human eyes.

A. brilliant     B. attractive    C. available    D. sensitive

高三英语单项填空中等难度题查看答案及解析

The differences in the children’s achievements can not be completely explained _________ their social backgrounds.

A.in terms of

B.in case of

C.in need of

D.in charge of

高三英语单项填空简单题查看答案及解析

The fact that blind people can see things using other parts of their bodies apart from their eyes may help us understand our feeling about color. If they sense color differences, then perhaps we, too, are affected by color without knowing it. .www.gkxx.com

Salesmen have discovered by experience over a long period of time that sugar sells badly in green wrappings（包装）， that blue foods are considered not agreeable to the taste, and that cosmetics（化妆品） should never be packed in brown. Their discoveries have grown into a whole subject of color psychology（心理学）。 Some of our preferences（偏爱） for colors are clearly psychological. Dark blue is the color of the night sky and therefore connected with calm, while yellow is a day color connected with energy and encouragement. Experiments have shown that colors, partly because they are connected with psychology, also have a direct effect on people’s mind. People in bright red surroundings show an increase in breathing speed, heartbeat and blood pressure; red is exciting. Pure blue has exactly the opposite effect; it is a calming color. Being exciting, red was chosen as the signal for danger, but a close study shows that a bright yellow can produce a more basic state of alarm, so fire engines in some advanced areas are now rushing around in bright yellow colors that stop buses, trucks and cars.

1.The passage tells us that salesmen have __________.

2.It can be inferred from the passage that ________.

3.If people are exposed to（置身于） pure blue, _________.

4.The most effective color in the passage for warning people is _______.

5.Which of the following do you think is the best title of the passage?

高三英语阅读理解中等难度题查看答案及解析

（题文）The differences the children’s achievements can not be completely explained ________ their social backgrounds.

A. in front of　　 B. in case of

C. in need of　　 D. in charge of

高三英语单项填空简单题查看答案及解析

Plants may not have eyes and ears，but they can recognize their siblings (兄弟姐妹)，and researchers at the University of Delaware have discovered how.The ID system lies in the roots and the chemical signals they secrete (分泌)．

Canadian researchers published that sea rocket，a common seashore plant，can recognize its siblings.Susan Dudley observed that when siblings are grown next to each other in the soil，they “play nice” and don’t send out more roots to compete.However，the moment one of the plants is thrown in with strangers，it begins competing with them by rapidly growing more roots to take up the water and mineral nutrients in the soil.

After reading Dudley’s study，Bais decided to find the method behind the sibling recognition.Working in his laboratory，Bais and his doctoral student Meredith Biedrzycki set up a study with wild populations of Arabidopsis thaliana.In a series of experiments，young seedlings were exposed to liquid media containing the root secretions from siblings，from strangers，or only their own secretions.The length of the longest lateral (侧面的) root was measured.The exposure of plants to the root secretions of strangers induced (引诱) greater lateral root formation than exposure of plants to sibling secretions.Strangers planted next to each other are often shorter，because so much of their energy is directed at root growth.Because siblings aren’t competing against each other，their roots are often much shallower (浅的)．

Biedrzycki did the painstaking laboratory research，observing more than 3,000 plants involved in the study every day for seven continuous days and documenting the root patterns.“Arabidopsis roots are nearly translucent (半透明的) when they are young and were also twisted when I removed them from plates，”Biedrzycki notes.“This manuscript (手稿) is very important for my research since the focus of my thesis project is understanding the biochemical ways behind root secretions.”

The research also may have implications for the home gardener.“Often we’ll put plants in the ground next to each other and when they don’t do well，we blame the local garden center where we bought them or we attribute their failure to a germ，”Bais says.“But maybe there’s more to it than that.”

1.Which of the following would be the best title for this passage?

A．A Great Biology Researcher

B．Plants Recognize Their Siblings

C．Plants’ Roots and Secretions

D．A Research on Plants

2. What encouraged Bais to study the sibling recognition?

A．Sea rocket.

B．Plants’ sensing system.

C．Biedrzycki’s thesis project.

D．Dudley’s study.

3. What does the underlined word “painstaking” in Paragraph 4 probably mean?

A．Important.　     B．Adventurous.

C．Careful.　     D．Hard­working.

4.What can we infer from the last paragraph?

A．The local garden center should be blamed when plants can’t grow well.

B．The local garden center often sells low quality seeds to customers.

C．Plants in the home garden can’t grow well because of the germ and seeds.

D．Competing against strangers，plants in the home garden can’t grow well.

高三英语阅读理解中等难度题查看答案及解析

In Canada you can find dogs, cats, horses, etc. in almost every family. These are their pets. People love these pets and have them as their good friends. Before they keep them in their houses, they take them to animal hospitals to give them injections（注射） so that they won’ t carry disease. They have special animal food stores, though they can get animal food in almost every kind of store. Some people spend around two hundred Canadian dollars a month on animal food. When you visit people’ s houses, they would be very glad to show you their pets and they are very proud of them. You will also find that almost every family has a bird feeder in their garden. All kinds of birds are welcomed to come and have a good meal. They are free to come and go and nobody is allowed to kill any animal in Canada. They have a law against killing wild animals. If you killed an animal, you would be punished. If an animal happened to get run over by a car, people would be very sad about it.

People in Canada have many reasons to like animals. One of them might be: Their family ties are not as close as ours. When children grow up, they leave their parents and start their own life. Then the old will feel lonely. But pets can solve this problem. They can be good friends and never leave them alone.

1.The passage mainly talks about ＿＿＿＿＿＿＿＿ .

2.In Canada, children leave their parents when they grow up because ＿＿＿＿＿ .

3.Which of the following is TRUE？

高三英语阅读理解中等难度题查看答案及解析

       In Canada you can find dogs，cats，horses，etc．in almost every family．These are their pets．People love these pets and have them as their good friends．Before they keep them in their houses，they take them to animal hospitals to give them injections so that they won’t carry disease．They have special animal food stores，though they can get animal food in almost every kind of store．Some people spend around two hundred Canadian dollars a month on animal food．When you visit people’s houses，they would be very glad to show you their pets and they are very proud of them．You will also find that almost every family has a bird feeder in their garden．All kinds of birds are welcomed to come and have a good meal．They are free to come and go and nobody is allowed to kill any animal in Canada．They have a law against killing wild animals．If you killed an animal，you would be punished．If an animal happened to get run over by a car，people would be very sad about it．

People in Canada have many reasons to like animals．One of them might be：Their family ties are not as close as ours．When children grow up， they leave their parents and start their own life．Then the old will feel lonely．But pets can solve this problem．They can be good friends and never leave them alone．（词数242）

1.The passage mainly talks about________．

A. how to keep disease from pets            B. pets in Canada

C. how to take good care of pets            D. life of the old in Canada

2.In Canada，children leave their parents when they grow up because________．

A. they don’t love their parents any more

B. they can only find jobs far from their parents

C. their parents’ houses are too small

D. they wouldn’t depend on their parents any more

3.Which of the following is TRUE？

A. People buy animal food only at the animal food stores.

B. Pets eat better than people．

C. Almost every family has a birdcage in his house．

D. Any bird can come to the bird feeders to eat．

高三英语阅读理解中等难度题查看答案及解析

In Canada you can find dogs，cats，horses，etc. in almost every family. These are their pets. People love these pets and have them as their good friends. Before they keep them in their houses，they take them to animal hospitals to give them injections（注射）so that they won’t carry disease. They have special animal food stores， though they can get animal food in almost every kind of store. Some people spend around two hundred Canadian dollars a month on animal food. When you visit people’s houses，they would be very glad to show you their pets and they are very proud of them. You will also find that almost every family has a bird feeder in their garden. All kinds of birds are welcomed to come and have a good meal. They are free to come and go and nobody is allowed to kill any animal in Canada. They have a law against killing wild animals. If you killed an animal，you would be punished. If an animal happened to get run over by a car，people would be very sad about it.

People in Canada have many reasons to like animals. One of them might be：Their family ties are not as close as ours. When children grow up，they leave their parents and start their own life. Then the old will feel lonely. But pets can solve this problem. They can be good friends and never leave them alone.

1.The passage mainly talks about ＿＿＿＿＿＿＿＿ .

2.In Canada，children leave their parents when they grow up because ＿＿＿.

3.Which of the following is TRUE？

高三英语阅读理解中等难度题查看答案及解析

In Canada you can find dogs，cats，horses，etc．in almost every family．These are their pets．People love these pets and have them as their good friends．Before they keep them in their houses，they take them to animal hospitals to give them injections so that they won’t carry disease．They have special animal food stores，though they can get animal food in almost every kind of store．Some people spend around two hundred Canadian dollars a month on animal food．When you visit people’s houses，they would be very glad to show you their pets and they are very proud of them．You will also find that almost every family has a bird feeder in their garden．All kinds of birds are welcomed to come and have a good meal．They are free to come and go and nobody is allowed to kill any animal in Canada．They have a law against killing wild animals．If you killed an animal，you would be punished．If an animal happened to get run over by a car，people would be very sad about it．

People in Canada have many reasons to like animals．One of them might be：Their family ties are not as close as ours．When children grow up， they leave their parents and start their own life．Then the old will feel lonely．But pets can solve this problem．They can be good friends and never leave them alone．（词数242）

1.The passage mainly talks about      ．

2.In Canada，children leave their parents when they grow up because       ．

3.Which of the following is TRUE？

高三英语阅读理解中等难度题查看答案及解析