1. Trees can get light from ________ in the daytime.
| A．CO2 | B．O2 | C．the sun |
| A．sunlight | B．soil | C．leaves |
相似题推荐
【推荐1】For ten weeks, in a great house on the island of St Thomas, John C. Lilly tried to teach a six-year-old dolphin to speak English. Margaret Howe, an experiment (试验) helper, would live day and night with Peter, a dolphin. And they would eat, bathe (洗澡), sleep and play together from Sunday to Friday, with only Saturdays off for Margaret. She lived her life in swimming clothes—with a coat on colder evenings—and cut her hair short so that she could get on with Peter more easily.
After a few days, Peter was becoming more and more interested in winning her attention. He threw a ball against her shower towel to get her to play. As time went by, he only wanted to play ball with her and not on his own.
The problem was that, just at the time Peter and Margaret began to get on well just as two best friends, the experiment ended and the lab was closed. After a few weeks, Margaret received the sad news that Peter had killed himself by refusing to breathe, and sinking to the bottom of his pool.
Dolphins may not speak English—but, just like humans, they know all about broken hearts.
1. Peter is the name of .| A．a doctor | B．a dolphin | C．an experiment helper |
| A．four | B．five | C．six |
| A．cut her hair short | B．have a common life like others |
| C．wear swimming clothes | |
| A．Dr John C. Lilly was satisfied with the experiment |
| B．the lab was closed and the dolphin died |
| C．the dolphin could speak English at last |
| A．dolphins aren't worth studying |
| B．dolphins can't be humans' good friends |
| C．dolphins may have feelings just like humans |
【推荐2】Maybe you are familiar with scenes in movies where a pilot has met a problem mid-flight and you hear him shout “Mayday, mayday, mayday”. But what does “mayday” mean? “Mayday” is an internationally recognized distress call (求救信号), mostly used by pilots and boat captains. The signal can be sent out on any channel by radio communication.
This emergency call first started in the 1920s. At that time, the distress call was “SOS” and was usually used by navy captains. The message was sent in Morse code (电码) by telegraph. In Morse code, “SOS” is three dots, three dashes (线) and three dots. The signal was unmistakable. However, aircraft pilots use radio calls, so sending out “SOS” could be misheard as other letters, such as “F”.
Frederick Stanley Mockford, a radio officer at Croydon Airport in London, was asked to think of a word that would indicate distress. Because of the amount of flights that flew between Croydon and Paris, he chose mayday, as it sounds similar to the French word “m’ aider”, which means “help me”.
Facing a threatening situation, pilots have to repeat the signal three times in case of radio interference (干扰) or loud background noise. If the pilots don’t get a reply within two minutes, they should repeat it. Once they receive a reply, more information, including the code of the flight, their situation and the number of people on board should be reported. Sometimes pilots are directed to a nearby airport or location where they can make an emergency landing. While mayday signals indicate a life-threatening situation, they do not always end in death.
Despite (尽管) dangers, air travel is still the safest means of transport.
1. What does the article tell us about “mayday”?| A．It was sent by telegraph in the beginning. |
| B．It is only used by pilots and boat captains. |
| C．It was invented by a radio officer in the 1920s. |
| D．It is a signal mainly used in European countries. |
| A．---…--- | B．------…… | C．……--- | D．…---… |
| A．表明 | B．截获 | C．破译 | D．传递 |
| A．Because “SOS” was easily misheard by captains. |
| B．Because it sounds similar to “m’ aider”, a French word. |
| C．Because its pronunciation is similar to “distress” in French. |
| D．Because it had something to do with the flights at Croydon Airport. |
| A．When to use mayday signals. |
| B．What makes mayday signals useful. |
| C．How mayday signals were recognized. |
| D．How to use mayday signals to call for help. |
【推荐3】What’s in your IP?
If you share a photo on Weibo, others will know you are in Shanghai. Chinese social media platforms now display their users’ locations. All this information is based on our IP addresses. So, what exactly is an IP address? Can others accurately locate us through our IP addresses?
You may compare your IP address to your home address. Your friends can find your home with your home address. Similarly, with your IP address, other devices(设备) can “find” your device. Without your IP address, Bilibili wouldn’t know where to send that cute cat video you just clicked on.
But your IP address doesn’t directly give away your name, phone number or home address. It only shows your general location. However, risks still exist.
Everything you do online is being monitored, whether by social media platforms or your browser(浏览器). This data is often linked to your IP address. It is stored on servers(服务器) across the world. Nobody can know your online activities just by having your IP address. However, there are “bad guys” out there. Cybercriminals(网络罪犯) can steal your information by hacking(非法侵入) into certain servers. Companies get hacked every day, so the chance of this happening is never zero.
Skilled hackers can also reach your device by knowing your IP address. This is especially true if you are connected to public Wi-Fi networks. The hackers can then install malware on your devices. These pieces of software can steal your information without you knowing about it.
If you are worried about what happens if someone gets your IP address, you may consider changing your online habits. For example, do not share personal information on social media. Regularly changing your IP address can also make it harder for anyone to steal your information. You can do so by turning off your router(路由器) for a minute and then turning it on again.
1. Which is the easiest way for others to find your IP address?| A．Shopping online at home. | B．Reading articles on Weibo. |
| C．Surfing the Internet in your company. | D．Playing online games with public Wi-Fi. |
| A．A kind of IP addresses. |
| B．A special kind of hacker. |
| C．A software that can steal your information. |
| D．A dangerous Wi-Fi that will show your IP address. |
| A．Joe always changes his IP address every week or month. |
| B．David always posts his personal information on Bilibili. |
| C．Tom always uses public Wi-Fi when he is out. |
| D．Johnson never turns off his router. |
| A．To tell us how others can locate our home address. |
| B．To tell us how to protect personal information. |
| C．To tell us what IP address is. |
| D．To tell us what hackers do. |
1. You may telephone ____________ for help if your younger brother or sister is ill.
| A．Yang Jun | B．Liu Hong |
| C．Li Nan | D．Zhang Hui |
| A．13973098479 | B．0745-2709348 |
| C．1992301636 | D．13704348529 |
| A．driver | B．teacher | C．doctor | D．Farmer |
| Frequency Activity | Every day | Three or four times a week | Twice a week | Once a week |
| Exercise | 55 | 30 | 10 | 5 |
| Play basketball | 20 | 40 | 20 | 20 |
| Watch TV | 5 | 60 | 30 | 5 |
| Do homework | 90 | 10 | 0 | 0 |
| Eat vegetables | 50 | 30 | 10 | 10 |
| Eat junk food | 15 | 50 | 30 | 5 |
| Eat fruit | 60 | 25 | 10 | 5 |
1. In the class, fifty-five percent of the students exercise ________.
| A．every day | B．three or four times a week | C．twice a week | D．once a week |
| A．100% | B．60% | C．30% | D．5% |
| A．once a week | B．twice a week | C．three times a week | D．both A and B |
| A．eat fruit every day | B．eat junk food once a week |
| C．do homework three or four times a week | D．play basketball twice a week |
| A．90% students do homework every day. |
| B．50% students eat junk food three or four times a week. |
| C．All students do homework every day. |
| D．Only 5% students exercise once a week. |
1. There are two ________ on the map.
| A．parks | B．clubs | C．supermarkets | D．banks |
| A．next to | B．in front of | C．across from | D．behind |
| A．The post office is between the bank and the bus stop. |
| B．There is an English club across from the sports club. |
| C．The library is behind the sports club. |
| D．The restaurant is next to the supermarket. |
【推荐1】Mom was cooking in the kitchen. She could hear the girls arguing in the living room. It was the third time this week that the sisters had been arguing over nothing. A few minutes later, Maria rushed into her bedroom angrily and closed the door heavily.
“Come to the kitchen, young lady,” Mom firmly （坚定地） said to Maria in her best mother tone （语气） of voice.
Maria walked into the kitchen and shouted, “I can’t stand living with Felicia another minute. I don’t ever want to talk to her again!”
Mom called out, “Felicia, come to the kitchen right now.”
While Felicia was on her way, Mom put two chairs opposite each other but very close together.
“Maria, you sit here and Felicia you sit there.” The girls sat face to face, with their knees almost touching. “Now you look each other in the eye for five minutes,” Mom ordered.
At first the girls moved their bodies from side to side. Mom said firmly, “You must stay staring at each other for five minutes. Each minute you don’t make eye contact （眼神交流） means another minute sitting in the chairs. ” They both wanted out, so they had to sit there and look at each other.
Felicia looked at Maria’s pouting （噘嘴的） face while Maria looked at Felicia’s angry face. They each thought the other one looked ridiculous （可笑的）. In fact, they were being ridiculous to fight and be mad at each other over nothing.
Soon Maria couldn’t stand it any longer and began giggling （咯咯地笑） and so did Felicia. They giggled and laughed.
Mom wisely didn’t say anything except, “Okay girls, you can go now.”
1. Maria and Felicia argued a lot this week. What was the reason?| A．They argued over nothing. |
| B．They didn’t want to live together. |
| C．They didn’t want to talk to each other. |
| D．They each thought the other one was ridiculous. |
A． | B． | C． | D． |
① Maria and Felicia stared at each other.
② Maria argued with Felicia.
③ Maria and Felicia giggled and laughed.
④ Mom asked Maria and Felicia to sit opposite each other.
| A．②④③① | B．④②①③ | C．②④①③ | D．②①④③ |
| A．Maria had quite a good relationship with Felicia recently. |
| B．The kitchen is a good place to stop an argument. |
| C．Mom solved the girls’ problem wisely. |
| D．The girls were under pressure from Mom to make it up （和好）. |
| A．parents can do nothing about the argument between children |
| B．it’s difficult to deal with the argument between children |
| C．there is no need to deal with the argument between children |
| D．5-minute eye contact is helpful to deal with the argument between children |
Thanks to an online activity and a stranger with a strong sense of romance and a strong will, an old box full of 70-year-old love letters was returned to its very first owner.
Twenty years ago, a woman named Cherry Vallance got the letters from her neighbor who found them in the top floor of his house and wanted to throw them away. Luckily, they ended up in Cherry’s house where they were once again forgotten until her daughter, Kim Rowe, discovered them again.
The letters were from 1948 and 1949 and were about the first romance between Norma Hall in Kent, England and Bob Beasley, a soldier fighting overseas. That was the only information she had, but Kim heard a lot of moving stories about people and things being found through Facebook years later. She posted the story online.
The Internet found Norma Beasley living in Lincoln, England. She was so surprised to find that her loved love letters still lived in the world, and that they were in the same old box.
The moment makes people smile and also full of tears, though. Norma says she hasn’t looked at the letters yet. Bob passed away late last year, and she is still not ready to face the letters alone.
1. The love letters have a history of ________.| A．70 years | B．20 years | C．50 years | D．only one year |
| A．Cherry Vallance | B．Kim Rowe | C．Norma Hall | D．Bob Beasley |
| A．the letters were dirty | B．the old box was very strong |
| C．the letters were kept well | D．the old box wasn’t very pretty |
| A．He moved to a new house. | B．He had left the world. |
| C．He lost his way home. | D．He went to another country. |
| A．Norma Hall isn’t Kim Rowe’s grandmother. |
| B．Norma Beasley is the owner of the love letters. |
| C．Norma Hall got married to Bob Beasley. |
| D．Norma Hall has lived in Lincoln since 1948. |
【推荐3】Studies show that walking several times a week can lower the risk of a lot of diseases. They include heart disease, diabetes(糖尿病), stroke(中风)and bone loss(骨质疏松). Walking can also help you lose weight.
Studies have also shown that walking for thirty minutes a day can slow down and even prevent the development of type two diabetes. Walking several times a week is a good way to control weight and lose body fat. Studies show it also helps reduce feelings of sadness.
Experts say walking is one of the safest ways to exercise. There is a low risk of injuries. S
o it is good for people who are starting an exercise programme for the first time and for older people.
A walking programme is easy to start. You should wear loose clothes and good shoes. There are shoes that are designed on purpose for lots of walking. Doctors say you should walk fast enough to have you breathe hard. Yet you should still be able to talk. Let your arms move freely while you are walking.
There are no rules for starting a walking programme. You might walk short distances. Or you might walk up hills to strengthen your leg muscles(肌肉). Health experts say you can get the most from a walking programme if you walk at about 6 kilometres an hour for thirty minutes a day. You should do this about several times a week.
1. Which of the following is NOT TRUE according to the passage?| A．If you are over 70, you’d better not exercise by walking. |
| B．If you want to prevent yourself from heart disease and stroke, you can keep walking. |
| C．If you want to lose weight, walking several times a week is a good choice. |
| D．Whether you walk short distances or walk up hills, it’s good for your health. |
A． | B． |
C． | D． |
3. Which do you think is the best title?
| A．A Good Walking Programme |
| B．Walking to Better Health |
| C．Walking Studies and Experts |
| D．Some Rules for Walking |
