The Colorado River is the lifeblood of the American Southwest. It supplies water to more than 36 million people, has changed the desert into farmland, and allows cities like Los Angeles, Phoenix, and Las Vegas to develop. But satisfying the region’s need for water has come at a price.
The river once traveled all the way from Colorado’s Rocky Mountains to the Gulf of California. Now, dams (水坝) control the river’s water for human use. As a result, the river no longer reaches the ocean. Without water, the delta (三角洲) at the river’s mouth has become dry and poor.
To bring the delta back to life, engineers recently opened the Morelos Dam near the US-Mexico border to free a temporary burst of water. This pulse flow allowed the Colorad River to reach the sea for the first time in 16 years, helping the river’s delta come alive.
The dams built by the US government form a system of man-made lakes. These lakes can store four times the river’s yearly flow. “The lakes are like the river basin’s bank accounts,” says Taylor Hawes. “They provide a place to save up water for not-so-rainy days — like right now”.
In wetter times, on and off since the 1960s, the Colorado managed to complete its journey to the sea. During those rare times, spring floods temporarily brought life back to the delta. Seeing the difference a little water could make gave scientists the idea for this year’s pulse flow.
“Just add water and you get an amazing recovery,” says Eloise Kendy. “The project serves as a model of how to manage rivers sustainably (可持续) for both people and nature. A lot of rivers in the West have problems. We used them to make the deserts bloom and build cities. We didn’t think about the environment. But it’s possible to restore them. If we can do it in the Colorado River Delta, we can do it anywhere.”
1.What can we lean from the first two paragraphs?
A.The Gulf of California is flooding.
B.The Colorado River’s delta is dying
C.The American southwest is becoming poor.
D.The water in the Colorado River is running out.
2.Taylor mentioned the bank accounts to show that ________.
A.lakes have stored much of the river water
B.many banks provided money to build dams
C.the money made from the lakes are kept in banks
D.people can borrow money from banks to buy lake water
3.What does Kendy want to express in the last paragraph?
A.Restoring deserts is sustainable for nature.
B.Many cities are built on deserts in the West.
C.Rivers in the West have been polluted seriously.
D.Environmental protection must go with development.
4.What is the main idea of the passage?
A.An effort to protect the Colorado River from drying.
B.An experiment to make the Colorado River flow freely.
C.A plan to bring the Colorado River’s delta back to life.
D.A way to make full use of the water from the Colorado River.
Every experience that American business woman Leigh-Ann Buchanan remembers has come from travel. Her early trips to the countries in Asia, Africa and the Americas were no small thing — they assisted her to make connections with community organizations abroad, build leadership skills and find a greater purpose in her voluntary work. All of these experiences played an important part in her becoming a mentor (导师) to high school students in Miami, US.
She saw that many of her students from underserved communities had never left the country. This not only shut them out from having life-changing experiences, but they often missed out on college scholarships (奖学金) because their resumes (简历) couldn’t compete with those from higher-income backgrounds.
Then she saw a program founded by her friend in Ghana. It offered US students the opportunity to experience cultural exchanges abroad. Buchanan wondered why the kids she mentors in Miami couldn’t have these life-changing experiences. So, she started the Nyah Project in 2014.
Since then, the project has provided money for 10-day leadership trips to 57 high-performing high school students throughout underserved communities in Miami. All 57 have gotten into colleges around the country, and over 90 percent have received full scholarships to college. Nyah fellows have traveled to countries including Indonesia, Namibia, Costa Rica and South Africa.
The trips bring cultural exchange opportunities, like learning about traditional Balinese dance in Indonesia and teaching younger students in Namibia. Kemoni Alexander, who is studying at Ohio Wesleyan University, was a Nyah fellow in 2017, and traveled to Namibia and South Africa for her first time out of the country.
“The neighborhood that I grew up in wasn’t the most resourceful and my schools were short of money,” Alexander said. “I could hardly believe that I was able to have that opportunity because other people saw that potential (潜力) in me and believed in me.”
1.What does the underlined word “assisted” in Paragraph 1 mean?
A.Required. B.Helped.
C.Trained. D.Reminded.
2.Why did Buchanan set up the Nyah Project?
A.To offer students scholarship. B.To share her travel experiences.
C.To support her friend’s program. D.To provide chances for poor children.
3.How do the children benefit from the Nyah Project?
A.They are sure to be mentors in the future.
B.They can enjoy traveling worldwide for free.
C.They can experience cultural exchanges on trips.
D.They can all receive full scholarships to college.
4.What can we infer from Alexander’s words?
A.She was thankful for the opportunity.
B.She was more confident of her ability.
C.She regretted having joined the project.
D.She felt embarrassed about her background.
假设你是李华，最近收到了你朋友Bonny的来信。他在信中说由于自己刚进入高中，不知道如何适应新生活，如何去结交新朋友。请你给他回信，内容包括：
1. 表示问候和慰问；
2. 提出关于学习、生活和交友等方面的建议。
注意：1. 词数100左右；
2. 可适当增加细节，以使行文连贯。
Dear Bonny,
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours
Li Hua
翻译句子
1.我积极参加各种各样的课外活动，这让我变得越来越自信。（take part in）
2.我们来国家公园的原因是那里有各种各样的野生动物。（why）
3.如果我当时把弟弟落在后面，我妈妈是不会高兴的。（leave…behind）
4.写信是和朋友保持联系的最佳方式。（stay in touch with）
5.我会永远记住你总是那个在我处于困境中时帮助我的人。（keep in mind）
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
Everyone knows about straight-A students. They always concentrate and learn effectively in class, turn in perfect homework and score highly in exams. Then how do super-achievers do it? 1. (know) how to make 2. most of your inborn abilities is important for more.” Hand work isn’t the whole story, either. “It’s not how long you sit there with the books open. It’s 3. you do while you’re sitting.” Keep all assignments or papers 4. (complete) and put in separate folders（文件夹）, so they’ll be 5. (ready) available（可使用的）for review at exam time.
Know the due dates of your homework and complete it early, so you have time 6. (polish) and review it. You should be aware that homework 7. (help) to strengthen what you have learned in class and find out some knowledge 8. you don’t understand, so it is worth putting effort 9. it whether your teacher checks it or not.
Discuss homework problems together, try different 10. (approach) and explain them to one another. Thus, you have a chance to see how others approach a problem and learn their methods of doing something.
A mother in east China went to celebrate her son’s birthday at school—but her son’s ______ took her by surprise. The loving mother decided to surprise her son by ______ up in a cartoon bear clothes and bringing him a/an ______ during class.
To her astonishment, the boy immediately ______ her mother by her hands and ran to give her a big ______. The heart-warming video filmed on Monday ______ the mother in a blue bear ______ walking towards her son’s classroom with a birthday cake ______ her hand.
After passing the cake to the ______, she goes into the classroom to celebrate her birthday with the ______ children. “Look who’s here!” the teacher ______ to the boy.
The boy ______ around and said, “Teacher, this is my mum!” The teacher asked, “How do you know?” “Her ______!” the boy replied with great ______.
The ______ mother then showed her ______ by removing the big head of the bear and the happy boy jumped into her arms. “ I didn’t ______ him to spot me at all,” the mother, Liu, told video news site Pear. “I was so ______ that I cried!”
Many net users were moved by the video, which has been ______ more than 4.6 million times on social media. “You wouldn’t be able to spot your mother by her hands if you didn’t truly love her!” one user said, “This is so heart-warming. Your child actually loves you ______ you think!”
1.A.behavior B.idea C.advice D.request
2.A.making B.bringing C.dressing D.standing
3.A.cake B.toy C.book D.bag
4.A.remembered B.encouraged C.recognized D.contacted
5.A.time B.shock C.smile D.hug
6.A.shows B.protects C.sights D.reminds
7.A.hat B.suit C.shoes D.watch
8.A.for B.on C.to D.in
9.A.classmates B.boy C.teacher D.child
10.A.other B.one C.some D.another
11.A.called out B.looked up C.smiled at D.listened to
12.A.hanged B.turned C.pushed D.walked
13.A.voice B.clothes C.hands D.smile
14.A.respect B.thought C.mind D.confidence
15.A.frighted B.disappointed C.forgetful D.surprised
16.A.cheeks B.face C.hair D.arms
17.A.expect B.dream C.make D.care
18.A.shocked B.touched C.amused D.annoyed
19.A.filed B.imagined C.viewed D.gained
20.A.instead of B.more than C.rather than D.such as
