Google has reported progress in its plan called “Project Loon” to provide Internet service to rural (农村的) areas without Internet connectivity around the world. The company has no plans to use traditional wiring, which can be costly. Instead the idea is to float (漂浮) huge balloons (气球) about 20 kilometers above the surface of the Earth.
The balloons would act like telecommunications satellites, providing Internet service to the rural areas. The huge objects would ride air currents (气流) to either stay in place or move to another position high in the skies. At first, the idea was to have a large number of balloons circling the planet. One balloon would move away from an area while another arrived to ensure service in the affected areas. But the company said it has found a way to make balloons float over one area for a long period. In a report published online, the company said its software “can now send small teams of balloons over a specific area where people need Internet access.”
The company said some of the balloons stayed in the same area for as long as three months. The company also said the discovery should speed up the project and reduce costs: “We’ll reduce the number of balloons we need and get greater value out of each one, they said. But Project Loon workers must still find ways to increase the life of the balloons. A British Broadeasting Corporation report said the longest service for a single balloon was 190 days.
Google has also explored the idea of providing Internet service to rural areas using solar—powered drone aircraft (太阳能无人机). However, it gave up that project because of technological difficulties and high costs.
1.What’s the aim of the “Project Loon”?
A.To float huge balloons above the rural areas.
B.To help rural areas have access to the Internet.
C.To increase Google’s income in the rural areas.
D.To advertise Google’s new product in the rural areas.
2.Why wouldn’t Google use traditional wiring?
A.It could be too expensive.
B.It could put off the project.
C.It couldn’t provide greater value.
D.It couldn’t work for a long period
3.What do we know about the balloons?
A.They must be used in a large number.
B.They could provide service as long as 3 months.
C.They’ll be sent up by solar-powered drone aircrafts.
D.They would work like telecommunications satellites.
4.What is the passage mainly about?
A.An unexpected discovery.
B.Some unknown facts about balloons.
C.Google’s using balloons to provide Internet service.
D.The differences between the new and traditional wiring.
难度: 中等查看答案及解析
You already know many things that can reduce your chances of getting various types of cancer. Avoiding tobacco (烟草) products is an important thing, but have you ever considered your choice of dinner time as a reason for your risk of cancer? Probably not, but new research suggests that you might want to consider it.
A new study published in the International Journal of Cancer draws some very interesting connection between people’s time for dinner and their risk (风险) of developing certain types of cancers, including breast and prostate (前列腺) cancer, which are two of the largest killers of men and women.
“Modern life often means mistimed sleeping and eating that are connected with poor health effects in experimental studies,” the researchers explain. The research mainly focuses on how long before bedtime a person eats their last meal of the day. People who eat before 9 p. m or eat at least n couple of hours before hitting the sack have lower risks of developing cancers. The scientists find that these people enjoy a 20% drop in cancer risk when compared to those who eat dinner after 10 p.m. or eat right before climbing into bed.
The researchers followed the habits of thousands of people and tracked their nighttime eating habits and whether or not they developed cancer over the long term. The numbers seem to point towards early dinners being a very beneficial thing if you’re hoping to avoid some of the more common types of cancer, but the scientists still don’t know exactly why that’s true. At the moment they believe circadian rhythm (生物钟) is playing a role, though they can’t say exactly how.
1.Why are tobacco products mentioned (提到) in Paragraph 1?
A.To introduce the topic.
B.To make comparisons.
C.To advertise some products.
D.To show the harm of smoking.
2.What does the underlined part “hitting the sack” in Paragraph 3 mean?
A.Getting up. B.Going to bed.
C.Drinking some soup. D.Taking some medicine.
3.What can we infer from the last paragraph?
A.The researchers didn’t have long-term research plans.
B.The researchers need further work to improve their study.
C.The researchers have confirmed the way of circadian rhythm works.
D.The researchers have found the real causes of some types of cancer.
4.What is mainly talked about in the passage?
A.Food and cancer. B.Tobacco and cancer.
C.Sleeping and cancer. D.Dinner time and cancer.
难度: 中等查看答案及解析
Endangered species are animals that are on their way to becoming extinct. Some of the reasons why animals become endangered are caused by humans. 1. Forests and grasslands are being destroyed for farm land Pollution is another leading cause of endangered animals. Air, water, and land pollution can harm animals by destroying their living environment. 2. For example, the arrival of new animal species in an area can endanger wild animals. All the reasons above have caused more and more animals to become endangered. So we should take action to help them. Here are some useful ways.
First, plant trees. Trees recycle oxygen, returning it to the air for us to breathe. 3.
Second, pick up trash. Picking up trash not only protects the environment and keeps our surroundings beautiful, but it can also save wild animals by giving them a safer and cleaner environment. 4.
5. The population increase threatens the wildlife as our resources become fewer and fewer, which influences wild animals” living environment greatly. So keep an eye on the latest news about endangered animals and reach out our hands! By contributing money, things or just volunteering, we will play a valuable role in the protection of wildlife and in helping our earth!
A.Third, donate something.
B.One reason is the loss of habitat.
C.The third reason is the arrival of new animal species.
D.Third, learn about the latest information about wild animals.
E.They also help to create a complete and lively global ecosystem.
F.So pick up as much trash as we can to help protect wild animals.
G.There are other causes of endangered species that are indirectly caused by humans.
难度: 困难查看答案及解析
As we all know, a friend in need is a friend indeed. I really don’t know the meaning of this proverb until one day something _________ happened to me.
That morning, I got up late and _________ to school without breakfast. While crossing a street, my bike _________ a stone and I fell on the ground, with my both knees badly hurt. I managed the _________ and continued my riding. On my arrival at school, my teacher took us to the _________ for a basketball match. _________ I could hardly walk normally, I joined in the game. When I _________ to pass the ball, I was knocked down and fell down on my back. I could not _________ the bad pain and cried. My classmates all started _________ at me and continued their match. __________ on the ground alone, hungry and painful, I couldn’t stop my crying. Just at that moment, Jack, one of my teammates, __________ towards me from the other end and helped me. He comforted me and tried all __________ to make me stand. He asked another classmate to take his __________ and kept sitting beside me. He kept me company the whole day and even __________ me home after the school was over.
It was on that day that I leant and believed the proverb “a friend in need is a friend indeed” to be __________.
1.A.anxious B.happy C.surprising D.unexpected
2.A.ran B.walked C.drove D.hurried
3.A.kicked B.beat C.hit D.touched
4.A.pain B.loss C.sadness D.trouble
5.A.campus B.playground C.field D.lab
6.A.Although B.Since C.Until D.Once
7.A.decided B.hoped C.ordered D.tried
8.A.imagine B.stand C.control D.forget
9.A.staring B.laughing C.pointing D.shouting
10.A.Standing B.Sitting C.Falling D.Lying
11.A.jumped B.faced C.ran D.moved
12.A.methods B.ideas C.plans D.conditions
13.A.seal B.role C.place D.position
14.A.put B.picked C.dropped D.left
15.A.good B.true C.positive D.responsible
难度: 中等查看答案及解析
阅读下面短文，根据内容和提示，在空白处填入适当的内容（一个单词）或括号内单词的正确形式。
China is the hometown of kites. Most people believe they 1. (invent) 2,500 years ago, during the Spring and Autumn Period. Later kites were used by the armies 2. (measure) distance, test the wind, and rescue people. During the Tang dynasty, kites were used more 3. a tool for fun. At first, only royal (皇室的) family 4. (member) could play with kites. Later it became popular among common people 5. flew them on important events and festivals. Every year in spring when the Tomb-sweeping day came, almost every household went out to fly the kite and had 6. picnic in sunny and windy days. It was a good time to display the kites as well as 7. (enjoy) the warm weather and the fresh air.
Nowadays, flying kites has become a popular form of pleasure and 8. (compete). Flying kites in spring day can benefit your health physically and 9. (mental). Not only can it build up your body but also it can help you keep away 10. your troubles and forget your worries.
难度: 中等查看答案及解析
假如你是一名高中学生李华，在浏览网页时发现，世界上很多文化遗产遭受到了各种人类活动、自然灾害等的破坏，对此你深感痛惜，决定给联合国教科文组织世界文化遗产中心的负责人John写一封关于如何保护全球文化遗产的建议信。内容包括：
1. 大力宣传保护文化遗产；
2. 倡导环保旅游，避免破坏文化遗产；
3. 筹集资金对遗产进行维修和维护。
注意：1. 词数80左右；
2. 可以适当增加细节，以使行文连贯；
3. 信的开头和结尾已写好，且不计入总词数。
Dear Mr. John,
I’m sorry to see that so many cultural heritages in the world are being destroyed nowadays.
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Hope you can take my suggestions into consideration.
Yours Sincerely,
Li Hua
难度: 困难查看答案及解析
阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。
I looked forward to a visit with my mom, who lived 2,000 miles from my home in California. Since Mom was 80 and suffered from Alzheimer’s (阿兹海默症), I realized how important it was to see her again soon.
Mom received loving care from the Sister Servants of Christ the King at a 40-bed, basic-care facility (场所) in Edgeley, North Dakota. She lived in a simple room, spent most of her day doing simple things, and seemed to be “all right, “considering that dementia (痴呆) had set in.
When Mom came in, I smiled, hugged and kissed her, and said, “Nice to see you, Mom.” She didn’t recognize who I was! I was shocked.
Stressed out, I spent several hours trying to connect with my mother—talking with her, walking around the grounds, looking at family pictures in her room, chatting with the nuns (修女) —doing whatever I could think of to help Mom recognize her son. I hoped for a recognition “wonder”. But nothing I said or did worked, I was very annoyed.
The next morning, I suddenly had an idea. I thought of something that might stir her memory (记忆).I thought of strawberry milkshake (草莓奶昔). Yes, strawberry milkshake in Edgeley, North Dakota. So I took Mom to the Edgeley Coffee Shop. I wanted to treat her here. While Mom was looking at the menu, I took Sandy, the waitress, aside, quietly told her of Mom’s dementia condition and my plan to recall her long-term memory, and ordered two strawberry milkshakes.
The first paragraph: When Sandy delivered the milkshakes, I was too nervous to say a word.
The second paragraph: There’s a simple explanation for Mom’s memory.
注意：1. 所续写短文的词数应为150左右；
2. 续写部分分为两段,每段的开头语已为你写好。
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难度: 困难查看答案及解析