NASA has big plans for returning astronauts to the moon in 2024, a stepping stone on the path to sending humans to Mars. But where should the first people on the Red Planet land? While there are lots of places on Mars scientists would like to visit, few would make practical landing sites for astronauts. Thanks to the researchers, their newly-published paper in Geophysical Research Letters will help by providing a map of water ice believed to be as little as an inch (2. 5 centimeters) below the surface.
Water ice will be a key consideration for any potential landing site. With little room to spare aboard a spacecraft, any human missions to Mars will have to harvest what’s already available for drinking water. Liquid water can’t last in the thin air of Mars. With so little air pressure, it turns from a solid to a gas when exposed to the atmosphere. On this planet, water ice is locked away underground. Buried water ice changes the temperature of the Martian surface, so the study’s authors relied on heat-sensitive instruments to find ice that astronauts could easily dig up. The authors of the new paper make use of data from spacecrafts to locate water ice that could potentially be within reach of astronauts on the Red Planet.
The paper’s lead author, Sylvain Piqueux of NASA’s Jet Propulsion Laboratory in Pasadena, California said, ‘‘We’re continuing to collect data on buried ice on Mars, aiming to find the best places for astronauts to land.” Piqueux is planning a comprehensive campaign to continue studying buried ice across different seasons, watching how the abundance of this resource changes over time.
1.What’s the benefit of the study?
A.To produce a map of the surface of Mars.
B.To help decide where to land on Mars.
C.To speed up the harvest of ice deep inside Mats.
D.To arouse attention to seasonal changes on Mars.
2.Why is water ice important for any landing site?
A.Because it is the source of power.
B.Because water only exists in the form of solid on Mars.
C.Because it can serve as drinking water.
D.Because astronauts are too busy to collect pure water.
3.How can heat-sensitive instruments tell the location of buried ice?
A.By measuring the surface temperature of Mars.
B.By digging up the surface of Mars.
C.By collecting the data of rocket fuel.
D.By calculating the amount of liquid in the air.
4.In which section of a website may this text appear?
A.Education. B.Travel.
C.Sport. D.Technology.
A new exhibition in Beijing examines the experience of China’s millions of empty-nesters, and the sense of loss they feel when their children unavoidably leave home. Held by the Tomorrow Foundation and initialed by actor Huang Xiaoming at the Dachin Contemporary Art Center, the exhibition opened in Beijing on November 9th, and will run until December 9th.
According to Gao Xiaoqi, director of the Dachin Contemporary Art Center, “Empty-nesters are a common social phenomenon. But many young people haven’t realized their parents are actually empty-nesters.” She adds, “We don’t want to place a burden on the viewers when they visit the exhibition, but we do aim to make them feel how their parents felt when their children left home.”
The exhibition is more of an immersive (浸没式) experience rather than simply a gallery to view exhibits. In another area, visitors can put on earphones and listen to some impressive passages describing the parent-child relationship performed by ten stars.
Many visitors were touched by the line: only noticed I stayed at home for 15 days every year, but I didn’t realize from my parents’ eyes that I had been away from home for 20 years,” actress Kong Wei recites.
It was really touching, and it made me realize that I am really important to my parents. All I wanted to do after listening to it was to go back home and spend more time with them,” says Sina Weibo user Zhuizhumengli, a visitor to the exhibition.
“The phenomenon of empty-nesters is quite a challenge since old people’s needs are not necessarily money or other material reliefs. Although many old people have friends and hobbies, they still need their children’s love and attention,” says Huang.
1.Why is the exhibition held?
A.To place a burden on the viewers.
B.To remind the audience to value time.
C.To raise people’s awareness of caring for their parents.
D.To show the importance of relationships between family members.
2.What is paragraph 3 mainly about?
A.Who visits the exhibition. B.How the exhibition gets its name.
C.When and where the exhibition is held. D.How the exhibition is presented.
3.How do visitors feel about the exhibition?
A.Moved. B.Bored.
C.Casual. D.Discouraged.
4.Which is the best title for the text?
A.Showing Love for the Old B.After the Birds Have Flown
C.A Discussion on Empty-nesters D.An exhibition on Nests
Dangwal was a teacher in Bankholi village from December 2016 till August 21th this year. The school is attended by about 200 children of seven villages. “I had spent nearly three years teaching children in this school and spending time with the villagers. They always considered me as a member of their own family. That is why when I told them that I have been sent to another school, they could not believe it,” said Dangwal.
On learning his leaving, the villagers told him that they would like to organize a “Goodbye” party for him, on which he agreed but placed a condition that “It should be a small one.” However, on the final day I was surprised to see a large number of villagers gathered near the school with drums. As soon as I stepped out of the school, children and women started crying by hugging me while asking me not to go. The love brought tears to my eyes as well,” Dangwal said.
Remembering his early days in the school, Dangwal said it was not easy for him to adjust but gradually he managed it. “In the six months, I faced some problems as the culture and language of the villagers in the area was different from mine. I learnt it, which helped me to get along with the children and villagers,” Dangwal recalled.
“He was not just a teacher of our children but one of us. He always stood with every villager in the hour of need. His leaving the school is a big loss for us,” one of the villagers, Mamta Rawat, said while praising Dangwal.
He was one of the few teachers who decided to live in the village where the school was located while most of the teachers would live at more comfortable places away from the village. This really touched us,” said another villager Harish Uniyal. “He would always be in our hearts,” Uniyal further added.
1.What is Dangwal’s requirement about the “Goodbye” party?
A.Villagers should gather near the school. B.Only a few people should be involved.
C.Drums should be brought there. D.Students shouldn’t cry.
2.What difficulty did Dangwal meet with at first?
A.He found it hard to get along with his students. B.The food there didn’t agree with him.
C.He had to teach about 200 students. D.He couldn’t understand the local language.
3.What does the underlined word “This” in the last paragraph refer to?
A.Dangwal was ready to help others.
B.Dangwal couldn’t hold back tears saying “goodbye”.
C.Dangwal didn’t mind the uncomfortable living conditions.
D.Dangwal made friends with the villagers.
4.What’s the text mainly about?
A.Students and villagers unwillingly part with Dangwal.
B.Dangwal’s working experience as a village teacher.
C.Dangwal feels culture shock in Bankholi village.
D.Another school welcomes Dangwal.
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1.What is the main purpose of this text?
A.To introduce a leading sales firm. B.To advertise for a sales agent.
C.To explain the responsibility of a salesperson. D.To guide the readers to a linked website.
2.What’s the appeal of Be Interactive?
A.Sales skills can be improved.
B.Relevant experience is a must.
C.Good relationships between the staff are to be built.
D.Members are promoted as their working years increases.
3.Who is the least likely to be employed by Be Interactive?
A.A person who speaks good English. B.A person with a strong desire to learn.
C.A hard-working person full of enthusiasm. D.A person lacking communication skills.
假定你是李华，校学生会主席。学生会计划举办“中国传统美食节”的活动，请你给外教Mary写封邮件，邀请她参加。内容包括：
1. 时间和地点；
2. 活动：学习制作、共同品尝美食等。
注意：1. 词数100左右。
2. 可适当增加细节，以使行文连贯。
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假定英语课上老师要求同桌之间交换修改作文，请你修改同桌写的以下作文。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。
删减：把多余的词用斜线（\）划掉。
修改：在错词下面划一横线，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。
This winter I had to stay home and looked after my 5-year-old nephew so his mother has been working at the hospital day and night, taken care of patients. I remembered of the moment his mother left for the hospital, he burst into tear and tried to keep her going there. Then I explain to him “Your mother is like Wonder Woman, one of the cartoon superheroes who fights bad guys every day.” He final calmed down. Because in her mind, it is Wonder Woman which is the strongest in the battlefield.
