题目内容

A dog can’t speak words, but it can “talk”. It has feelings just as you do. At times it may feel angry or afraid. Watch a dog closely. You can see what it is trying to tell you. When you are afraid, you may look down shyly. A fearful dog looks away from you. It may run away too. When you are angry with people, you stare at them and press your lips together. An angry dog also stares. Sometimes the hair along its back stands up.

Do you feel guilty when you have done something you shouldn’t? Dogs can feel guilty, too. At times when I come home, my dog gives me a guilty look. Then I know he’s done something wrong.

Dogs need love and attention. Some dogs are very unhappy when they are left alone for a long time. Some dogs even snap(撕咬) if they don’t get enough attention.

You may have a dog or you may know a dog. Treat it well if you want to have fun with it. Play with it. Take it for a walk. Don’t order it round too much. Try not to punish it one time and not the next for doing the same thing. Always remember, a dog has needs and feelings just as you do. Talk to a dog, it’ll talk to you, too.

1.If a dog snaps at things, it is because it may ______.

A. feel lonely B. feel shy

C. be fearful D. be disappointed

2.You can tell that a dog has done something bad when _________.

A. its hair stands up

B. it runs away from you

C. it has a guilty expression

D. its lips are pressed together

3.Which of the following things does the writer advise you to do towards your dog?

A. Never punish the dog

B. Never leave the dog alone

C. Train the dog to take orders from you

D. Train it the way you want to be treated.

4.The underlined word “guilty” in the second paragraph most probably means _______.

A. happy B. sorry

C. frightened D. excited

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Imagine this: you get up in the morning and put on a custom printed T-shirt. Then you eat some 3-D printed food and relax on your printed sofa. Perhaps you take a ride in a printed electric car to the hospital to get a printed tooth fitted.

Though some of these things may seem impossible, they’re closer to reality than you might think. The world of 3-D printing is coming to a store near you soon.

The idea of 3-D printing is to produce complicated shapes in a very personalized way. If you want to make a totally new object, you need to make a virtual design in a CAD(computer aided design)file first. Or you can use a 3-D scanner to make a digital copy of an object. Then, based on the design or copy, the 3-D printer makes paper-thin slices out of liquid, plastic, or metal and puts them together to create the object you want.

There are many areas in which 3-D printing can change our lives. One such area is health care. Researchers have developed simple 3-D printed organs, which can be used in life-saving operations. A 17-year-old boy in the US has also recently developed a brain-powered, 3-D printed replacement hand. From heart monitors to fake limbs(四肢), we can soon be living longer thanks to 3-D printed technology.

Another area that 3-D technology looks sure to change is food. Can you imagine being able to print your favorite dishes at home at the touch of a button? Even big companies are behind the trend. Hersheys, one of the largest chocolate makers in the world, recently announced that it would start producing chocolate with the help of 3-D printers. NASA, the US space agency, has reportedly spent $125,000 (767,594 yuan) developing a “3-D pizza printer”.

It is not yet clear how long it will take until 3-D printers are available to everyone. But one thing is for sure: the possibilities are endless.

1.The purpose of the first paragraph is to ________.

A. list some major 3-D printing breakthroughs

B. describe the characters of 3-D printing

C. picture a future life with 3-D printing

D. describe the benefits that 3-D printing has brought to our lives

2.Compared with traditional manufacturing procedures, 3-D printing ________.

A. isn’t practical in daily life

B. relies less heavily on the use of 3-D scanners

C. can produce complicated products in larger sizes or numbers

D. has an advantage in meeting the personal needs

3.We can infer from the article that ________.

A. there is still a long way to go before everyone can have access to 3-D printing

B. 3-D printed organs and limbs are as effective as real ones

C. big food companies are major players in the 3-D printing industry

D. people can create any object with any material by 3-D printing

4.What can be the best title for the text?

A. What is 3-D printing?

B. A new technology-3-D printing.

C. How to use 3-D printing?

D. The development of 3-D printing.

Climate change, global warming, the greenhouse effect … these days nobody denies that there is something strange and worrying happening to the atmosphere. Scientists are puzzled by the rise in carbon dioxide in the atmosphere. They are afraid that the world may be a short way from what they refer to as uncontrolled global warming.

At Mauna Loa Observatory in Hawaii, meteorologists(气象专家) have been carefully monitoring the amount of carbon dioxide in the Earth’s atmosphere for the past 50 years. Until recently, there has been a gradual increase of around 1.5 parts per million (ppm). In 2013 the figure rose to 2.08 ppm and in the following year they registered an increase of 2.54 ppm.

.Climate analysts feel that it istoo soon to draw conclusions about the phenomenon although the public are concerned that the carbon dioxide emissions are getting out of control. Jason Samenow, the chief meteorologist in the American National Weather Service,thinks that instead of having decades to find a solution to the problem, people might have only a few years. He believes that the Earth’s natural systems for absorbing the gas are breaking down resulting in the uncontrolled green house effect. He insists that this is something that could happen if the Earth’stemperatures rose to such a degree that it was unable to contain the heat. .

One interesting aspect of this climate change ng down resulting in the uncontrolled greenhouse effect. He insists that this is something that could happen if the Earth’s temperatures rose to such a degree that it was unable to contain the heat.is that it is not happening in a uniform way around the world. Carbon dioxide levels in the South Pole are noticeably lower. This suggests that something has happened in the northern hemisphere that set off the rise. Forest fires in North America might hold the answer to the puzzle, along with very hot summers in Europe.

The 2014 heat wave was certainly out of the ordinary. Statistics claim that more than 30,000 people lost their lives as a direct result of the high temperatures. Scientists are being cautious in their interpretations. Most feel that it is too soon to say that a new trend has been set. All agree that the phenomenon needs to be closely observed.

1.What puzzles scientists according to Paragraph 1?

A. Something strange and worrying in life.

B. Uncontrolled global warming.

C. The increase in carbon dioxide in the atmosphere.

D. The effects of climate change on everybody.

2.What opinion does Jason Samenow hold on the gradual increase of carbon dioxide?

A. People still have decades to solve this problem.

B. Uncontrolled greenhouse effect may happen in some situation.

C. The Earth’s natural systems for absorbing the gas have completely broken down.

D. The public shouldn’t be responsible for carbon dioxide emissions.

3.What does Paragraph 4 mainly talk about?

A. Forest fires in North America.

B. Low temperatures in the South Pole.

C. Hot summers in Europe.

D. North and South differences in climate change.

4.How will scientists deal with the high temperatures?

A. By observing the phenomenon closely.

B. By giving a solution directly.

C. By experiencing high temperatures personally.

D. By setting a new trend soon.

Think about the last time you felt afraid. Was it a fear of height? Did you oversleep on a weekday and fear you’d get into trouble at the office? In any case, you know what it feels like to feel fear.

But one woman doesn’t The woman, code-named “UM”, gave her first-ever interview after years of being studied by a team of researchers. The woman is given a code name because the researchers want to protect her from anyone who would take advantage of her inability to feel afraid.

UM can’t tell you what fear is because she’s never experienced it. “I wonder what it’s like to actually be afraid of something,” she said. The formal name for the disease is Urbach-Wieth disease, which is characterized by a hoarse(粗哑的)voice,small bumps around the eyes, and calcium deposits(钙沉积的)in the brain.

In the case of UM,the disease has transformed the part of her brain that controls the human response to fear. In the interview, UM talks about an event in her life where she was held at knifepoint and gunpoint, “I was walking to the store,and I saw a man on a park bench.He said. “Come here,please,” so I went over to him. He grabbed me by the shirt,put a knife to my throat and told me he was going to cut me. I told him, “Go ahead and cut me,” I wasn’t afraid at all. And for some reason,he let me go.”

Doctors who have been studying UM’s condition for years have been trying different things that could strike fear into her. They finally figured something out—increasing UM’s carbon dioxide levels.Extra carbon dioxide concentration in the blood is known to cause fear and panic in health individuals. Increasing UM’s carbon dioxide levels did manage to give her a fright.

1.The text starts by_______.

A. challenging the reader

B. solving daily problems

C. listing situations

D. giving explanations

2.Why is the woman with Urbach-Wieth disease given a code name?

A. To tell her case from other patients

B. To respect her privacy

C. To meet the researchers’ demands

D. To ensure her safety

3.From UM’s case,we can know that Urbach-Wieth disease may________.

A. stop the brain from functioning normally

B. lead to a decrease in calcium deposits

C. stop the brain from responding quickly

D. lead to an increase in carbon dioxide

4.What will probably happen to UM from the last paragraph?

A. Dying of the Urbach-Wieth disease.

B. Getting the sense of panic.

C. Experiencing another danger.

D. Speaking with a hoarse voice.

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