Many years ago, people relied on the sun, the moon and stars to find their way around. Later, the compass was introduced. And now, we have satnav（卫星导航）systems to guide us. A satnav system uses groups of satellites to show the user’s location. They send information to a receiver, such as a smartphone, to show us where we are.
The earliest built satnav system is the Global Positioning Satellite System, which belongs to the US. Then there is Russia’s Global Navigation Satellite system，the European Union’s Galileo and China’s own satellite navigation system, Beidou.
On October 18, 2017, an ARJ21-700 plane, which was the first domestically（国内地） produced jet equipped with the Beidou navigation system, successfully completed a test flight. The results showed the performance of the system developed by China matches that of similar systems produced abroad, according to the Commercial Aircraft Corporation of China.
Since its introduction in 2000, the Beidou navigation system has been increasing numbers of applications linked to everyday life, from shared bikes to farming.
When it comes to shared bikes, smart locks that support Beidou chips offer more accurate positioning than others, making it easier to find a bike.
Farmers can use Beidou-enabled tractors to plow（犁）the soil and use unmanned aircraft with Beidou to sow seeds, which can improve efficiency and make better use of resources. Beidou’s farming applications have spread from Heilongjiang Province to Beijing, Liaoning, Shanxi, Hubei and other regions across China.
With its many uses, the Beidou navigation system is even playing a big role in the Belt and Road Initiative（一带一路）. “To date, the Beidou system has covered most parts of the Asia-Pacific region, as well as countries along the Silk Road Economic Belt and the 21st Century Maritime Silk Road,” said Yang Changfeng, chief designer of the Beidou system.
Today, there are more than 20 Beidou satellites above our heads, and China plans to launch even more this year to expand the Beidou network to better serve the Belt and Road Initiative.
“As Beidou expands its overseas reach, it will be increasingly popular in the logistics（物流） industry,” said Miao Qianjun, Secretary General of the navigation services association. “Ships, for example, can use it to position themselves while sailing across oceans to European countries, no longer limited to Southeast Asian regions in the near future.
1.What is the purpose of the first two paragraphs?
A. To compare some modern satnav systems.
B. To describe the benefits of satnav systems.
C. To tell us how satnav systems were created.
D. To introduce some satnav systems and their functions.
2.What can we know about the Beidou navigation system according to the article?
A. It was used successfully in a new jet plane.
B. It is more powerful than other satnav systems.
C. It was introduced to China on October, 2017.
D. It wasn’t used in our everyday life until recently.
3.According to the article, the Beidou navigation system is already widely used for _______.
A. plowing the soil and sowing seeds
B. improving the efficiency of network
C. producing more smart locks for shared bikes
D. navigating ships across oceans to European countries
4.What is Miao Qianjun’s attitude toward the future of the Beidou system?
A. Worried. B. Casual.
C. Positive. D. Doubtful.
A primary school in Jinhua, Zhejiang Province has announced it no longer requires parents to sign their children’s homework, which was aimed at getting parents to supervise(监督) their children after school. China Youth Daily comments: Putting an end to the requirement that parents sign off on the homework of their children eases the burden on many parents, as otherwise they would have to do primary school homework after a hard day’s work. But there are worries that if parents stop having to sign off on their children’s homework, the children will not get good grades.
However, the most effective way for children to study is to develop their willingness to learn and do their own studies. When doing homework, students practice and hopefully apply what they have learned. It is true that teachers are supposed to check students’ homework and identify their mistakes. But some parents correct their children’s mistakes by themselves when signing off on it.
It is the duty of students to do their homework, be responsible for their studies and correct their mistakes. Parents’ supervising their homework, checking their answers and dealing with the harder problems will only make children less aware of their mistakes and encourage them to wait for their parents’ help when they face any problems.
Children have to manage their own learning and develop the ability to study by themselves, as competence will not be achieved if a student simply repeats strict tasks in which he is assisted in school by teachers and at home by parents.
A delayed satisfaction experiment conducted by Walter Mischel in the 1960s proved that children with better self-discipline(自律) performed better in their studies and interpersonal relationships.
There is little doubt that parents’ supervision can make children’s homework better. But it does not give children the chance to practice their ability to solve problems independently.
1.Why does the author mention the primary school’s announcement in the first paragraph?
A. To express his doubts. B. To introduce the topic.
C. To present an argument. D. To clarify his writing purpose.
2.In the author’s opinion, stopping signing kids’ homework mainly aims to __________.
A. ease the burden on many parents.
B. help children get good grades.
C. increase the kids’ awareness of being responsible for their studies.
D. shift(转移) the responsibility of supervising kids’ homework on to teachers.
3.Which of the following can be an effect caused by parents’ stopping signing off?
A. Children’s grades will absolutely decrease.
B. Children will lose confidence when facing any problems.
C. Children will simply repeat rigid tasks so as to practice themselves.
D. Children will try to deal with their problems and mistakes by themselves.
4.What is the author’s attitude to parents’ stopping signing kids’ homework?
A. Supportive. B. Indifferent.
C. Neutral. D. Opposed
When I was a boy there were no smart phones. Computers were something you saw on STAR TREK(星际航行)，and our television only got one channel clearly. Still, I was never bored. The fields, hills, and woodlands around my house were the nature ready-made playgrounds.
I can remember once hiking to a nearby lake and slowly walking around it. At the backside of it I was amazed to find an old, one-lane, dirt road that I had never seen before. I immediately set out to travel it. It was full of holes and muddy tracks and deep woods bordered it on both sides, but exploring it still seemed like a fine adventure.
I walked on and on for what seemed like hours. I was sure my guardian angel was whispering in my ear to turn around and head back home but I was stubborn and even a bit stupid, so I walked on.
The dirt road give way to a rock one and then a paved one, yet there was still neither a car nor a house in sight. My legs were getting tired. I noticed that the sun was starting to go down and I grew scared. I didn’t want to end up trapped on this road in the dark of night, but I was sure it would be dark before I could make my way back to the lake again.
I was almost in tears when I turned one last curve(弯曲处) and saw something in the distance. It was a house that I recognized. My heart leapt up! I jumped up and down and laughed out loud. I knew the way home! It was still over a mile away but my legs felt like feathers and I hurried back to my house in no time. I walked in with a big smile on my face just in time for dinner.
I remembered this recently when I saw a sign that said, “All roads lead Home.” This is true. In this life all roads no matter what their twists(弯曲) and turns are can lead us home again. They can lead us to our homes here on Earth. They can lead us to our homes in our heart, if we can insist.
1.Why was the author never bored when he was a boy?
A. Because there was still a TV.
B. Because he liked hiking alone.
C. Because there were so many playgrounds built for him.
D. Because he had so many places around his house to play.
2.What made the author decide to take the old road?
A. Seeing it before.
B. That it was a muddy road.
C. Trying a new and special experience.
D. That it had deep woods on both sides.
3.How did the author feel when he saw a known house in the distance?
A. Excited. B. Frightened.
C. Touched. D. Desperate.
4.Why did the author mention the sign?
A. To share a famous saying with readers.
B. To introduce what he wanted to say.
C. To explain the function of the sign.
D. To prove the significance of the sign.
Panama City， Panama
For beach vacations that get you out of town and invite you and your family to dive into culture， consider a trip to Panama City． Here，you will enjoy beaches and city exploring． Book your stay at the Westin Playa Bonita， where you can book a room starting at ﹩222 a night． There are various programs，including beach Olympics， stargazing （天体观察）and Spanish lessons．
Jupiter， Florida
This place offers you quality time you can spend with your loved ones． Book your stay at Jupiter Beach Resort & Spa， with rates for a family of four starting at ﹩207 a night． Here， you can shoot baskets at the basketball courts，take a dip in the pool or teach your children beach yoga．
San Diego，California
The West Coast is a great spot for cheap beach vacations， so tell your family to pack their bags for a visit to San Diego． A cheap ﹩10 Uber ride from the airport will have you pulling up the Kona Kai Resort & Spa． Here，a family of four can stay in a Deluxe Guest Room starting at ﹩159 per night． Your kids can practice cannonballs at the pool after a visit to the world﹣famous San Diego Zoo．
Kihei Maui， Hawaii
For West Coasters who are growing bored with their backyard， fly to the islands of Hawaii． Stay at the Aston at the Maui Banyan， with a charge of ﹩179 a night for a family of four． Here，you'll witness some of the best sunsets of your life while your kids splash （戏水）in the Pacific， And if you're set on cooking a fancy meal， you'll enjoy suites that come with a full kitchen．
1.Which of the following charges you least a night？
A. The Aston at the Maui Banyan．
B. The Westin Playa Bonita．
C. The Kona Kai Resort & Spa．
D. Jupiter Beach Resort & Spa．
2.What can you do at the Aston at the Maui Banyan？
A. Admire beautiful sunsets．
B. Visit a world﹣famous zoo．
C. Observe fantastic stars．
D. Play some beach sports．
3.What is the common feature of the four destinations？
A. They all offer rooms with a full kitchen．
B. They are all intended for family trips．
C. They all pick up visitors from the airport．
D. They all provide bike riding on the beach．
为了加强与同学们的沟通，营造更好的学校生活，使同学们更加健康快乐的成长，学校决定向同学们征求建议。假如你是李明，用英语向校长写一封建议信。内容包括:
1.对学校和老师提出建议；
2.提出这些建议的原因。
注意:
1.词数100左右，开头已给出，不计入总词数；
2.可以适当增加细节，以使行文连贯。
3.文中不能出现真实的校名和地名。
Dear Headmaster,
I’m very glad to write a letter to you . These days we’re talking about how to have a better school life.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours sincerely,
Li Ming
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线，并在该词下面写出修改后的词。
注意:1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者(从第11处起)不计分。
Last week I went to the Summer Palace and met some American tourist by accident. I greeted them with English and then we begin to chat. I got to know that they were college students travel in China, most of them were fond of Chinese culture. They were busy taking pictures and were amazing at the changes that had taken place in the past few years. After that, we went boating or had a good time. We were exchanged our e-mail addresses so that we could write to each other in the future. I was gladly to have a chance to practice my oral English. What exciting experience it was!
