Zhuhai municipal government to start a project that will result in the small-sized unmanned surface vehicle, or USV.
\Beidou navigation system,\said Sun Feng, vice-president of CCS. The vehicle will be put into commercial operation by 2019.
Such unmanned vehicles are expected to lower the number of human-error incidents at sea, reduce labor costs and cut emissions(排放) by using batteries instead of gas.
\the entire running cost goes to human labor,\
\which enables it to be powered by batteries instead of gas, greatly cutting down the emission,\said.
Early this year, Oceanalpha launched an unmanned guard vehicle, which has already been adopted for military(军队的)use.
24.What is the passage mainly about? A. A Chinese high-tech company. B. A breakthrough in ocean research. C. A Chinese-foreign joint project. D. An advancement in a water vehicle.
25. What do we know about the unmanned USV? A. It is invented by a Chinese engineer. B. It is a result of many-sided efforts. C. Its running cost goes to human labor. D. It has been put into mass-production.
26. What can be inferred from Zhang Yunfei’s words? A. USVs will have fewer crew members. B. It takes more human labor to run USVs. C. There will be no accidents by using USVs. D. The change of power reduces the emission. 27. What field will the USV be used in?
A. Business. B. Military. C. Education. D. Science.
C
A new study suggests that tiny organisms living underground may store most of the carbon in Swedish forest floors. That's a good thing for the environment: If the carbon remains hidden in the soil, then it's not escaping into the atmosphere. There, it could contribute to global warming.
These organisms, called mycorrhizal fungi(菌根真菌), grow on tree roots. They provide trees with nutrients in exchange for their sugars, which contain carbon.
Scientists had long believed that most of the carbon sits above ground. But the new study suggests most carbon is trapped in the soil. Carbon is a building block of every living organism, from people and fish to bacteria and trees. Trees are masters at stashing carbon. They breathe in carbon dioxide from the air. They use the carbon to grow branches, leaves and roots. But the element moves around. If a tree falls down and rots—or is cut down and burned—its carbon goes back into the air as carbon dioxide. Too much of the gas in the air can foster global warming.
In cold northern forests, like those in Sweden, fallen leaves and branches take a long time to rot. That means the carbon in those materials can stay put for a long time.
To learn more about what a tree does with its carbon, ecologists at the Swedish University collected soil from 30 forested Swedish islands. They then measured the amount and age of the carbon in the samples. The scientists found that deeper, fungi-filled soils contained more carbon than soils from the surface of the forest floor.
When the scientists dated the carbon in the samples, they got a surprise: They found \carbon in deeper soils. The researchers had expected to find young carbon only in soils closer to the surface of the forest floor. The only explanation, they say: The young carbon came from the underground fungi that swallow carbon-containing sugars from tree roots.
With the new findings, scientists may better understand soil's role in storing carbon. That information could help improve forecasts for global warming.
28. How do fungi grow? A. They consume carbon dioxide.
B. They digest fallen tree branches. C. They absorb nutrients from the soil. D. They obtain sugars from tree roots.
29. What does the underlined word \A. Storing. B. Reducing. C. Transforming. D. Producing.
30. Why were the scientists surprised at the findings? A. Young carbon was found in the surface of the forest floor. B. The findings could not be explained scientifically. C. The findings proved their previous ideas wrong. D. It is hard to find young carbon in the underground fungi. 31. Which of the following can be the best title for the text? A. Fungi In Cold Northern Forests. B. Fungi As Carbon Keepers. C. Fungi On the Roots of Trees. D. Fungi In the Deep Soil.
D
Smile, you're on body cam
As camera technology gets smaller and cheaper, it isn’t hard to imagine a future where we’re all filming everything all the time, in every direction it isn't hard to imagine a future where we're all filming everything all the time, in every direction.
Would that be a good thing? There are some obvious potential upsides. If people know they are on camera, especially when at work or using public services, they are surely less likely to misbehave. Another upside is that it would be harder to get away with crimes or to escape from blame for accidents.
Body-cam data could also create a legal minefield. Arguments over the truth and interpretation of police footage(影像) have already surfaced. Eventually, events not caught on camera could be treated as if they didn’t happen. Alternatively, footage could be faked or doctored to avoid blame or
do wrong to others.
Of course, some people think that if you re not doing anything wrong, you have nothing to fear. But most people have done something embarrassing, or even illegal, that they regret and would prefer hadn't been caught on film. People already remove their social media feeds or avoid doing anything wrong in public--for fear of damaging their reputation.
The always-on-camera world could even threaten some of the qualities that make us human. We are natural persons who enjoy talking about other people's private lives and while those might not be desirable behaviours, they oil the wheels of our social interactions. Once people assume they are being filmed, they are likely to keep silent.
The argument in relation to body-cam ownership is a bit like that for guns: once you go past a critical threshold(临界阈值), almost everyone will feel they need one as an insurance policy. We are nowhere near that point yet- but we should think hard about whether we really want to say lights, body cam, action.
32. What does the underlined word \A. Advantages. B. Rules. C. Shortcomings. D. Dangers.
33. Why do people argue about police footage? A. Police footage can show the truth.
B. Events caught on footage are treated unfairly. C. Police footage could be changed on purpose. D. Footage should not be filmed by police. 34. What does the author believe?
A. People pretend to behave well with cameras on. B. people's private lives should be respected.
C. Talking about others' private lives promotes social interactions. D. People keep silent before cameras when talking about themselves. 35. What is suggested in the last paragraph? A. We don't need a critical threshold.
B. We should be cautious in adopting body-cam. C. We need body-cam as an insurance policy. D. We haven't decided whether to take action. 第二节 （共5小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
I don't know what that dream is that you have. I don’t care how disappointing it might be as you're working toward that dream. But that dream you're holding in your mind is possible. Some of you already know that it's hard. It's hard changing your life. In the process of achieving your dreams, 36
There will be moments when you are going to doubt yourself. You'll say, “Why? Why is this happening to me?” For those of you who have experienced some hardships, don't give up on your dream. 37 , but they will not stay, they will come to pass.
Many of you fail to seek your purpose in life. You dream and then follow it up with a list of all the reasons why the dream is unachievable. 38 Things like these are the true limits you experience in life and they are what you create or what you allow others to lay upon you.
39 Acting on the dream is harder. Recognize that a dream is a journey. On the simplest level, it takes commitment, time and courage. But rarely is something great easily realized. Dreaming is recognizing the potential for greatness and seeking it in all areas of your life. Believe in your dreams and your ability to accomplish them. I'm here to challenge you to reach for your dream. Do not be afraid to dream. 40 .
A. Your dreams never walk away. B. The rough times are going to come. C. You fill your life with excuses and \D. you must spend more time achieving it. E. Dreaming is the easy part. F. If you can dream it, you can do it!
G. you are going to suffer a lot of disappointment, failure and pain.
第三部分 英语知识运用（共两节，满分45分）
第一节 完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白