Do stars only appear at night? The answer is no. Venus (金星) is the only star that can be seen in daytime. It shone at its brightest in the night sky on Feb 17 this year.
Venus is the second planet from the sun. It is the second brightest natural object, behind the earth’s moon, in the night sky. Why is it so bright?
First of all, Venus is the closest planet to the earth. It is also covered by highly reflective (反射的) clouds, which can reflect about 70 percent of the sunlight striking (照射) it, almost twice as much as the earth does. Some people call 2017 the year of Venus, because the planet is at its brightest twice this year. Venus gets brighter when it goes further away from the sun, and nearer to the earth. The brightest moment happened once in February, and will happen again, during daylight, on April 30.
If Venus is so bright and close to us, isn’t it a better choice for human exploration (探索) than Mars? It is closer to the earth than Mars and it’s closer to the earth in size. The closer distance to the sun means solar power (太阳能) would be easier to generate as well.
However, with a temperature of about 465℃ on the surface, Venus is the hottest planet in our solar system!
But scientists never give up. Recently, a team of NASA and Russian scientists created new computer equipment that can stand temperatures of 480℃. It can work under Venus-like conditions (环境) for almost 22 days.
The next step, according to the scientists, is to send a probe (探测器) to Venus by 2025.
1. Which of the following about Venus is NOT true?A.It’s the only star that can be seen in daylight. | B.It’s the second planet from the sun. |
C.It’s the brightest natural object in the night sky. | D.It’s the closest planet to the earth. |
A.heat | B.produce | C.spread | D.form |
A.The closer distance to the earth. | B.The similar size to the earth. |
C.Too much solar power to use. | D.The extremely high temperature. |
a. was created by some UK scientists b. can stand temperatures of 480℃
c. can work for about 22 days on Venus d. will be sent to Venus by 2025
A.ab | B.bc | C.cd | D.ad |
相似题推荐
【推荐1】Is there intelligent(有智力的)life on other planets? For years, scientists said “no,” or “we don’t know.” But today this is changing. Seth Shostak and Alexandra Barnett are astronomers(天文学家). They believe intelligent life exists(存在)somewhere in the universe. They also think we will soon contact these beings(人;生物).
Why do Shostak and Barnett think intelligent life exists on other planets? The first reason is time. Scientists believe the universe is about 12 billion years old. “This is long enough for other planets to have intelligent life,” say Shostak and Barnett. The second reason is size—the universe is huge. “Tools like the Hubble Telescope(哈勃望远镜)have shown that there are more than 100 billion galaxies,” says Shostak. “And our galaxy, the Milky Way, has more than 100 billion stars. Some planets going around these stars might be similar to Earth.”
In the past, it was hard to look for signs of intelligent life in the universe. But now, powerful telescopes(高倍望远镜)allow scientists to discover smaller planets—the size of Mars or Earth—in other solar systems. These planets might have intelligent life.
Have beings from space already visited Earth? “Probably not,” says Shostak. “It’s a long way away.However, intelligent beings may contact us in other ways, such as radio signals(信号). In fact, they may be trying to communicate with us now, but we don’t have the right tools to receive their messages. However, this is changing. By 2025, we could make contact with other life forms in our universe and we might help each other.”
1. Seth Shostak and Alexandra Barnett are ________.A.astronomers | B.farmers | C.singers | D.drivers |
A.The Age and Size of Earth |
B.Our Galaxy: The Milky Way |
C.Why Intelligent Life Might Exist |
D.Earth: The Only Planet with Intelligent Life |
A.There were not any smaller planets. |
B.There were not any powerful telescopes. |
C.The astronomers were not interested in them. |
D.The Milky Way didn’t exist at that time. |
A.They’re afraid of us. | B.It’s a long way away. |
C.They don’t want to see us. | D.They don’t know how to use radio signals. |
A.Messages. | B.Tools. | C.Intelligent beings. | D.Radio signals. |
【推荐2】Like many other countries around the world, China hopes to explore the moon. It has already done so with several probes (探测器) and lunar rover (月球车). But it has even bigger plans to put a man on the moon in the near future.
Yang Liwei, China’s first man in space, said that it will “not take long” for a manned mission (任务) to get official agreement and money support, according to the Xinhua News Agency.
China’s space program is still young compared to those of the United States and Russia. But it has already made great achievements in exploring the moon. Its moon mission began with Chang’e 1, an unmanned orbital (轨道) probe that was sent up in October, 2007. It collected data that was used to create a 3-D map of the moon’s surface.
China achieved another achievement with the Chang’e 3 mission. For this mission, China’s first lunar rover, Yutu, successfully landed on the moon.
For China’s space program, it was another great achievement that Chang’e 4, the second lunar rover successfully landed on the moon’s far side, an area that has not yet been explored, in December, 2018.
China will follow Chang’e 4 with a series of other lunar mission. These missions will include taking lunar soil and rock samples, building “moon base”, and hopefully landing a human on the moon’s surface around 2030, according to Zhao Xiaojin, a senior official at the China Academy of Space Technology.
Last year, when Yang Liwei was asked if he had any plans to visit the moon himself, he replied, “If I am given the chance, no problem!” It is likely that many other Chinese share Yang’s excitement about this new stage of China’s space exploration efforts.
1. Which of the following countries may be better than China in space program?A.Russia. | B.The UK. | C.Canada. |
A.the first lunar rover and landed on the moon |
B.the second lunar rover and landed the moon’s far side |
C.an unmanned orbital probe and began the moon mission |
A.is China’s first man on the moon |
B.is worried about China’s future space program |
C.believes it won’t take long to put a man on the moon for China |
A.Hope for Future | B.China for Space | C.A Moon Base |
Mercury is the closest to the sun. It is very hot on Mercury. The planets that are far away from the sun are very cold. Venus is between Mercury and the Earth. It is sometimes called Earth’s “sister planet” because they have almost the same size and shape. The Earth is the planet where we live. From space, the Earth looks blue because it has so much water. Jupiter is the largest planet in our solar system. Saturn is known for having rings around it. Uranus was the first planet discovered with a telescope. We can see Venus, Mars, Jupiter, and Saturn with our eyes, however, to see Uranus, we need a telescope. Neptune is the 8th planet in our solar system. The planet is farthest from the sun.
Probes (探测仪) go into space and take pictures of the planets. We learn a lot from these pictures. If you could send a probe to any planet, where would you send it?
1. What goes around the sun?
A.Moon. | B.Stars. | C.Spaceships. | D.Planets. |
A.Mercury. | B.Venus. | C.Jupiter. | D.Saturn. |
A.cold | B.hot | C.small | D.bright |
A.潜水镜 | B.显微镜 | C.高台 | D.望远镜 |
A.Earth is the second closest planet to the sun. |
B.Jupiter is larger than any other planet in our solar system. |
C.Uranus is famous for having rings around it. |
D.We can’t see Mars with our eyes. |
【推荐1】Chuanjiang Chants(川江号子) is a form of folk singing performed by Chuanjiang boatmen in order to unify their movements and rhythms(节奏). Chongqing and eastern Sichuan are the main birthplaces of the Chuanjiang Chants.
In the age of wooden boat shipping for thousands of years, the power(动力) of wooden boats on the river came from the body of the boatmen. Whenever they headed up against the river or when the boat crossed a shoal, the boatmen had to pull together. Moreover, the long journey was boring and boatmen needed something to relax, and the Chuanjiang Chants came into being.
Chuanjiang Chants are both technical and artistic. Boatmen control the direction of the boat just like a driver is responsible for that of a car. And chants are like the accelerator(油门) of a car, controlling the speed of the boat. Therefore, the chats can adjust(调整) the force of the boatmen through its rhythm, so that the ship can move forward smoothly. At the same time, the chants are always sung in a bright voice, a good tone, and a beautiful sound. Therefore, it is also an art.
However, with the development and popularity of modern ships, Chuanjiang Chants are likely to be forgotten by people, facing an endangered situation. Our county paid great attention to the protection of it and it was included in the first batch of national intangible cultural heritage(非物质文化遗产) list. Hope that more and more people can get the chance to know the wonderful culture.
1. The main idea of Paragraph 2 is ________.A.how to sing Chuanjiang Chants | B.why Chuanjiang Chants appeared |
C.what Chuanjiang Chants are | D.who sings Chuanjiang Chants best |
A.the boat | B.a boatman | C.the direction | D.the accelerator |
A.Chuanjiang Chants are not only seen as a technology but also an art |
B.the boatmen can adjust their force according to the rhythm of the chants |
C.Chuanjiang Chants are forgotten by people because they are difficult to sing |
D.Chuanjiang Chants were used by boatmen as a way to relax during the long journey |
A.How Chuanjiang Chants Appeared |
B.How to Sing Chuanjiang Chants |
C.Chongqing—The Birthplace of Chuanjiang Chants |
D.Chuanjiang Chants—A Culture We Need to Protect |
【推荐2】
1. What kind of text is this?A.An advertisement. | B.An instruction. | C.A notice. | D.A tourist guide. |
A.Wash hands. | B.Drink water. | C.Brush teeth. | D.Eat food. |
A.2 minutes. | B.4 minutes. | C.15 minutes. | D.30 minutes. |
A.2. | B.3. | C.4. | D.5. |
A.Give it to a doctor. | B.Send it to a hospital. | C.Throw it anywhere. | D.Put it a plastic bag. |
Scientists know that our weight, mental health and immune (免疫) system are connected to our sleep habits. So are your grades-to a surprising degree, a new study finds. It showed that sleep caused for nearly one-fourth of the difference among students’ grades in a class. So even if you spend hours studying for a test but get too little and inconsistent (不一致的) sleep, you might still do poorly. And boys with poor sleep habits appeared to suffer (遭受) most.
Jeffrey Grossman, a scientist at the Massachusetts Institute of Technology in Cambridge wanted to test sleep in the real conditions. People’s sleep timetables are often disordered and unpredictable. He wanted to see if the sleep connects performance even when a study was done with people who kept regular timetables at home. To find out, his team turned to Fitbits. These wristbands can follow how long people sleep and how often they wake up.
The researchers invited 100 around 18-year-old students. Each got a Fitbit to wear all term long. At the end of the term, the scientists looked at the students’ sleep data (数据). They paid attention to patterns (模式) in the days and weeks before exams. They then compared those patterns to the students’ test scores. The results showed the importance of sleep for students.
As expected, teens who stirred (微动) a lot during the night were likely to perform poorly. The same went for those who didn’t get enough sleep. But how much someone slept the night before an exam didn’t affect that person’s grade. So, is pulling an all-nighter before the big test okay? No, it turns out. That’s because there was a third important factor: consistency of sleep a week and even a month before an exam. That means “a student who sleeps seven hours at night, every night, will do better than a student who sleeps 7. 5 hours one night and 6.5 another night,” Grossman says. That was true even when both students got the same amount and quality (质量) of sleep.
Sleep length, quality and consistency together caused 24.4 percent of the difference among the students’ test grades. And these factors appeared especially important for boys. Grossman’s team is not sure why. But boys who didn’t get enough sleep or regular sleep were likely to do worse on an exam than girls who had similar sleep patterns.
Helping students get more sleep depends in part on schools starting their days later. But it also comes down to students making sleep a higher priority (优先权). That may require getting more sleep and limiting late evening use of phones and other screens. Even with extracurricular activities, schoolwork and a social life, you need to get your sleep.
1. The researchers used Fitbits to ________.A.help the students sleep well | B.predict the students’ sleep length |
C.improve the students’ grades | D.collect the students’ sleep data |
A.Students with the same quality of sleep have no difference in grades. |
B.Students who sleep for more hours are likely to have higher grades. |
C.Boys with poor sleeping habits appear to suffer more than girls. |
D.Staying up before a big test can make a good result in grades. |
A.put sleep in the first place |
B.wear wristbands to keep healthy |
C.pay more attention to test scores |
D.compare sleep patterns to their performance |
A.Sleep: Is quality important? | B.Sleep: Does it influence grades? |
C.Sleep: Is 7.5 hours enough? | D.Sleep: Does it depend on schoolwork? |
【推荐1】Swimming is a good way to exercise. But do you know about open water swimming? It means swimming in the sea, a river or a lake. Open water swimming is enjoyable, but there is a lot more to think about. It’s very important to know how to keep safe (安全的) in the water.
Most swimming pools make sure that the water is comfortable enough for people to get into. However, in open water swimming, the water is often much colder, even in summer. It’s not the same as swimming in the pool. So many people like to wear a wetsuit (潜水衣) to help keep them warm.
If you want to swim in the open water, here are some rules for you to follow. First, choose a safe place. You can ask the workers there and they can tell you the safest place. Next, never swim by yourself. Always have an adult (成人) swimmer beside you. Third, wear a bright swimming cap. It can help people find you easily if something dangerous happens. Fourth, don’t swim too far and stay close to the river bank or the beach if you are in the sea.
Remember all these rules and you can have a great time swimming in the open water.
1. Which of the following means open water swimming? ________①swimming in the sea ②swimming in rivers ③swimming in lakes ④swimming in pools
A.①②④ | B.②③④ | C.①③④ | D.①②③ |
A.It’s much safer. | B.It’s much colder. |
C.It’s much warmer. | D.It’s much more comfortable. |
A.A scientist. | B.An adult swimmer. | C.A worker there. | D.A visitor there. |
A.A wetsuit. | B.A bright swimming cap. | C.A safe place. | D.The bank or the beach. |
A.Swimming in the open water | B.Don’t swim in the open water |
C.Swimming—a good way to exercise | D.Ways to keep warm when swimming |
【推荐2】With the development of science and technology, our daily life is becoming more colorful and more convenient. Here are some examples.
The Book-less Library Can you imagine walking into a library and finding all books have turned into computers? The first book-less public library is planned to open in San Antonio, Texas. Computers will take the place of books there soon. | Google Glass Google Glass is a pair of glasses. It can carry out many of the same tasks as smart phones. The glass has a hidden camera and a tiny screen. It is designed to take hands-free photos or videos of anything people are doing. |
A New Kind of Shirt Do you hate washing clothes? You’re going to love this kind of shirt made by an American clothing company, Wool & Prince. This shirt can be worn for 100 days without washing! The Wool & Prince shirt never needs ironing (熨烫). | An Underwater Hotel It looks like a spaceship but it is actually a picture of an underwater hotel. A company plans to build in the sea which is about 18 meters under the water. The whole building is underwater and you can get to it by swimming and diving. |
1. What can a Google Glass do according to the passage?
A.It can be used for reading. | B.It can be used exactly as a phone. |
C.It can be used for taking photos and videos. | D.It can be used to hide camera. |
A.There are many book-less libraries in the US now. |
B.You don’t need to iron your Wool & Prince shirt. |
C.People can arrive at the Underwater Hotel by spaceship. |
D.This kind of new shirt never needs to be washed. |
A.You don’t need to pay for your photos. | B.There are no hands appearing in your photos. |
C.Take free photos with your hands. | D.You don’t need to use your hands to take photos. |
【推荐3】Do you know why different insects (昆虫) or animals have their special colors? These colors can help them stay away from other dangerous animals.
Some birds like eating locusts, but ________. Why? It is because locusts change (改变) their colors with the plants. When plants are green, locusts look green. When plants are brown, locusts change to the same color. But not all insects can change their colors. It’s easy for other animals to see them. So they have to come out only at night.
If you study animal life, you will know the change of color is also important for animals to live in the wild (野外). Bears, monkeys, and other animals live in the mountains. Others can’t see them easily because they have the color much like the trees.
What about sea life? Octopus can send out something black when it faces danger and quickly (飞快地) swim away. It is not strong, but it can save itself in this way.
1. What help(s) insects and animals live in the wild according to the passage?
A.Good sleep. | B.Healthy food. | C.Strong bodies. | D.Special colors. |
A.locusts often run away | B.locusts don’t come out |
C.they can often catch a lot | D.they can’t see any at night |
A.changing its color | B.dancing with its legs |
C.giving out something black | D.staying behind green plants |
A.Sports News. | B.Animal Science. | C.School Time. | D.Life Stories. |
Some people say we live in a dog-eat-dog world. That means many people are competing for the same things, like good jobs. They say that to be successful, a person has to work like a dog. This means they have to work very, very hard. Such hard work can make people dog-tired. And, the situation(状况) would be even worse if they became sick as a dog.
A Cavalier King Charles Spaniel (the name of a kind of dog), is
Some people are compared to dogs in bad ways. People who are unkind or uncaring can be described as meaner than a junkyard dog(比垃圾场的狗更凶狠). Junkyard dogs live in places where people throw away things they do not want. Mean dogs are often used to guard this place. They bark or attack people who try to enter the place. However, sometimes a person who appears to be mean and threatening is really not so bad. We say barking dogs never bark.
Dog expressions are also used to describe the weather. The dog days of summer are the hottest days of the year. A rainstorm may cool the weather. But we do not want it to rain too hard. We do not want it to rain cats and dogs.
1. What does this passage mainly talk about?
A.How to live with the dog. |
B.Expressions related to(与...相关) the dog. |
C.Americans’ love for the dog. |
D.Dog expressions with the weather. |
A.lead a dog’s life | B.become sick as a dog |
C.live in a dog-eat-dog world | D.work like a dog |
A.trained | B.honored | C.awarded | D.dressed |
A.Everyone can be successful if he learns from the old. |
B.It might be difficult for the young to learn new skills. |
C.Junkyard dogs are careful in money arrangement. |
D.Mean dogs aren’t so awful as their appearance in fact. |
A.listing reasons |
B.using quotations(引用语) |
C.making comparisons(作比较) |
D.giving examples |
Bruce Vento High School
Back-to-School Celebration
February 28th, Friday 9:30 a.m. — 11:30 a.m.
BVHS is having a back-to-school celebration with sports, games, art programs and more. You don't want to miss it!
You don't need to register (登记) for the event. Your school ID card is required to receive a free backpack.
Volunteers needed for the Back-to-School Celebration!
Click (点击) here to register to volunteer at our Back -to-School Celebration. We will need your help before, during and after the event. Please feel free to register for the area you feel best fits you. Both parents and students are welcome.
Volunteer Training
February 21st, 5:00 p.m. — 8:00 p.m.
In the School Hall
If you have any questions about dates and times, feel free to contact (联系) us during our office hours.
E-mail: info@familyvaluesforlife.org
Phone: 651-774-6663
Office Hours: Monday — Friday, 9:00 a.m. — 5:00 p.m.
1. The Back-to-School Celebration will be _______.A.in the afternoon | B.on the weekend | C.two hours long |
A.Making art. | B.Getting a backpack. | C.Playing games. |
A.get some training | B.start work in early February |
C.go to the School Hall for registration |
A.One. | B.Two. | C.Three. |
A.noticeboard | B.newspaper | C.website |
I got some good news to tell you. One of our old friends, Zhao Yan, is going to visit us at the weekend. Do you remember her? She has a round face and two big eyes. She lives with her parents in Tianjin and is coming to see us. Lisa is her English name. I’ve got two photos of Zhao Yan. In one photo, she is playing basketball. In the other one, she is drinking pear juice. It is her favorite.
Let’s have a picnic near a lake on Saturday. Of course, we can go boating too. Maybe you’d like to swim in it. Remember not to catch the fish when you see them in the water. I’m going to meet Zhao Yan at the train station on Saturday morning. And we can meet near the lake at about eleven o’clock. You may come by bus. Remember to get off the bus at Lake Stop.
Yours,
Wu Tong
1. Who is Zhao Yan?A.Wu Tong’s sister. | B.Wu Tong’s teacher. |
C.Wu Tong’s friend. | D.Wu Tong’s classmate. |
A.She has a long face with small eyes. | B.She has a long face with big eyes. |
C.She has a round face with small eyes. | D.She has a round face with big eyes. |
A.The photo. | B.The pear juice. |
C.The English name. | D.Playing basketball. |
A.Zhao Yan is coming on Saturday. |
B.Han Li lives in Tianjin with her parents. |
C.Swimming is Wu Tong’s favorite sport. |
D.Han Li is going to meet Zhao Yan on Sunday. |