It was John’s quick action and knowledge of
I still cannot believe that I am
China, which takes pride in four inventions in ancient times, has once again shown its ability
So far the “new four great inventions”
It is
“Okay,” said our teacher, Mrs. Woodland:“It’s time for the gift exchange.” I was actually a little excited. I knew what a lot of the girls had brought, and any of those gifts would be great, especially my best friend Sara’s. She had made some candy and put it in this super cute bear mug(马克杯).
Mrs. Woodland had us put our gifts on our classroom table. Then we opened the gifts like a game. We each drew numbers and we got to the table and chose a wrapped(包装好的) gift when our number was called. But we didn’t necessarily have to. We could take a gift from somebody else that had already had their number called—if we thought we’d like that gift better than the wrapped ones.
When it was my turn, I didn’t take a wrapped gift from the table. And I didn’t take Sara’s either though I really wanted to. I took the perfume(香水) Megan had brought instead. I didn’t have enough money to get Mom something special, but the perfume was really nice. She might really like it.
I was busy thinking about the perfume and whether Mom would like it or not when there was a big commotion(嘈杂). It had been Hannah’ s turn to choose. She was the last one. And unsurprisingly, she didn’t go for the last wrapped gift on the table. Instead, she’d taken Sara’s gift from Lauren. Well, that meant Lauren had to take the wrapped gift. She looked a little upset when she got to the table. Everyone knew the last gift was from Kali. That was why no one had chosen it. Kali was really poor. And she always brought gifts that no one ever wanted. This time, she brought a pair of old—fashioned crocheted potholders(编织的防烫套垫)!
“I don’t want these,” Lauren whined(哀怨).“I want my candy back.”
“No way,” Hannah protested, keeping the mug of chocolate out of Lauren’s reach.
“Then I want Megan’s perfume.” Lauren came over to take my perfume. “Come on, Melanie, trade with me.”
Paragraph 1:
Mrs. Woodland advised me to trade with Lauren since I had always been kind.
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Paragraph 2:
“Here,” I said to my mom after I got home, handing her the potholders. “They are an early New Year gift.”
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5 . For years, the U.S. has experienced a shortage of registered nurses. The Bureau of Labor Statistics projects that while the number of nurses will increase by 19 percent by 2022, demand will grow faster than supply, and that there will be over one million unfilled nursing jobs by then.
So what's the solution? Robots.
Japan is ahead of the curve when it comes to this trend. Toyohashi University of Technology has developed Terapio, a robotic medical cart that can make hospital rounds, deliver medications and other items. It follows a specific individual, such as a doctor or nurse, who can use it to record and access patient data. This type of robot will likely be one of the first to be implemented in hospitals because it has fairly minimal patient contact.
A robot's appearance affects its ability to successfully interact with humans, which is why the RIKEN-TRI Collaboration Center for Human-Interactive Robot Research decided to develop a robotic nurse called Actroid F. It is so human-like that some patients may not know the difference. This conversational robot companion has cameras in its eyes, which allow it to track patients and use appropriate facial expressions and body language in its interactions. During a month-long hospital trial, researchers asked 70 patients how they felt being around the robot and "only three or four said they didn't like having it around."
It's important to note that robotic nurses don't decide courses of treatment or make diagnoses, though robot doctors and surgeons may not be far off. Instead, they perform routine and laborious tasks, freeing nurses up to attend to patients with immediate needs. This is one industry where it seems the interaction of robots will lead to collaboration, not replacement.
1. What does the author say about Japan?A.It ranks top in future robotics technology. |
B.It takes the lead in offering robotic nursing. |
C.It is in desperate need of registered nurses. |
D.It provides the best medication for the elderly. |
A.Cancelled. | B.Constructed. | C.Improved. | D.Applied. |
A.It has no difference from a human nurse. |
B.It gets favorable remarks from all the patients. |
C.It interacts with patients like a human companion. |
D.It uses body language even more effectively than words. |
A.Cooperation will not be replaced. |
B.Nurses will still play their roles. |
C.The robotics industry will be promising. |
D.Robots can meet patients' immediate needs. |
6 . How does an ecosystem (生态系统) work? What makes the populations of different species the way they are? Why are there so many flies and so few wolves? To find an answer, scientists have built mathematical models of food webs, noting who eats whom and how much each one eats.
With such models, scientists have found out some key principles operating in food webs. Most food webs, for instance, consist of many weak links rather than a few strong ones. When a predator (掠食动物) always eats huge numbers of a single prey (猎物) , the two species are strongly linked; when a predator lives on various species, they are weakly linked. Food webs may be dominated by many weak links because that arrangement is more stable over the long term. If a predator can eat several species, it can survive the extinction (灭绝) of one of them. And if a predator can move on to another species that is easier to find when a prey species becomes rare, the switch allows the original prey to recover. The weak links may thus keep species from driving one another to extinction.
Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems. In the 1960s, scientists proposed that predators at the top of a food web had a surprising amount of control over the size of populations of other species—including species they did not directly attack.
And unplanned human activities have proved the idea of top-down control by top predators to be true. In the ocean, we fished for top predators such as cod on an industrial scale, while on land, we killed off large predators such as wolves. These actions have greatly affected the ecological balance.
Scientists have built an early-warning system based on mathematical models. Ideally, the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back from the borderline. Prevention is key, scientists say, because once ecosystems pass their tipping point (临界点) , it is remarkably difficult for them to return.
1. A strong link is found between two species when a predator ______.A.has a wide food choice | B.can easily find new prey |
C.sticks to one prey species | D.can quickly move to another place |
A.The prey species they directly attack will die out. |
B.The species they indirectly attack will turn into top predators. |
C.The living environment of other species will remain unchanged. |
D.The populations of other species will experience unexpected changes. |
A.Uncontrolled human activities greatly upset ecosystems. |
B.Rapid economic development threatens animal habitats. |
C.Species of commercial value dominate other species. |
D.Industrial activities help keep food webs stable. |
A.By getting illegal practices under control. |
B.By stopping us from killing large predators. |
C.By bringing the broken-down ecosystems back to normal. |
D.By signaling the urgent need for taking preventive action. |
Compared with the people in many other countries, the Australians seem to know more about how to enjoy their lives. In Australia, different people have different ways of enjoying
Most
Some old people get up early in the morning. Then they go to the park to read newspapers, which can help them know what
Young people enjoy
8 . I fell in love with reading when I was a child. Through reading, I developed a good
Today I'm
A.relationship | B.career | C.agreement | D.attitude |
A.Considered | B.Born | C.Known | D.Described |
A.helped | B.waited | C.struggled | D.hesitated |
A.inspired | B.influenced | C.annoyed | D.hurt |
A.forbidden | B.forced | C.expected | D.allowed |
A.show | B.measure | C.guess | D.understand |
A.excited | B.frightened | C.challenged | D.shocked |
A.which | B.where | C.what | D.whom |
A.day | B.decade | C.week | D.season |
A.considered | B.kept | C.finished | D.admitted |
A.listener | B.reader | C.viewer | D.child |
A.strangest | B.busiest | C.luckiest | D.fastest |
A.amazement | B.satisfaction | C.panic | D.relief |
A.enthusiasm | B.chance | C.achievement | D.power |
A.calmed down | B.queued up | C.stayed up | D.sat down |
A.interests | B.vocabulary | C.needs | D.popularity |
A.easily | B.anxiously | C.privately | D.legally |
A.nervous | B.eager | C.proud | D.committed |
A.superb | B.free | C.strict | D.patient |
A.encourage | B.convince | C.expect | D.beg |
9 . The spread of Western eating habits around the world is bad for human health and the environment. These findings come from a new report in the journal Nature.
David Tillman, a professor of ecology at the University of Minnesota, America, examined information from 100 countries to identify what people ate and how a diet affected health. He noted a movement beginning in the 1960s. He found that as nations industrialized (工业化), population increased and earnings rose, more people began to adopt what has been called the Western diet.
The Western diet is high in sugar, fat, oil and meat. By eating these foods, people began to get fatter and sicker. David Tillman says overweight people are at greater risk of noninfectious(不传染的) diseases like diabetes (糖尿病) and heart disease.
Unfortunately when people become industrialized, if they adopt this Western diet, they are going to have these health problems, especially in developing countries in Asia. China is an example where the number of diabetes cases has been jumping from less than one percent to 10 percent of the population as they began to industrialize over a 20year period. And that is happening all across the world, in Mexico, in Nigeria and so on.
And, a diet bad for human beings is also bad for the environment. As the world's population grows, more forests and tropical areas will become farmlands for crops or grasslands for cattle. We are likely to have more greenhouse gas in the future from agriculture than that coming out of all forms of transportation right now.
Mr. Tillman calls the link among the diet, the environment and human health “a trilemma” — a problem offering a difficult choice. He says one possible solution is leaving the Western diet behind.
1. According to the passage, more greenhouse gas might be given off in the future from ______.A.transportation | B.developing countries |
C.agriculture | D.developed countries |
A.the diet, the environment and human health are closely connected |
B.the Western diet is the only choice as the nation industrializes |
C.people in tropical areas are more likely to have diabetes |
D.traditional diets are more balanced than the Western diet |
A.call on us to protect the environment |
B.warn us of the risk of the Western diet |
C.remind us of the importance of health |
D.advise us to have a balanced diet |
Wood-block printing first appeared in the early Tang period. During the Song dynasty the technique of block printing was very advanced. Books were
However block printing
Then ink was applied to them and
The technique of printing was gradually known to other Asian countries and Europe. The great influence printing had