题目内容

Chokwe Selassie, aged 13, is working hard to help drivers avoid potholes(坑洼). The eighth-grader was inspired to kick off his creation on a recent morning, when his mother was driving him to school. Their car was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. He decided to do something about the pothole problem in his city. His solution: an app that warns drivers when there is a pothole ahead.

Chokwe developed the app with his friends Rodriguez Ratliff and Emmanuel Brooks. When the app detects a pothole, it is highlighted in red. And if you get close to the pothole, your phone will warn you. Drivers can also use the app to report any potholes they meet, and to look for other routes they can take to avoid roads that have them.

The app relies on current available information about the streets of Jackson. It works by using the city’s 311 call system, and uses information already stored in a database. Through the call system, citizens dial 311 to report non-emergency problems, which include potholes. Chokwe and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype(原型).

Although the app isn't yet available for sale, Chokwe is already looking for ways to improve it. The prototype remains limited to 10 streets in Jackson, but he hopes to add more, so that it includes every street in the city. And then he wants to go even farther until it's nationwide.

1.The passage is mainly about ________.

A. a solution to traffic jams B. an App to detect potholes

C. pothole problems in big cities D. poor road conditions

2.What’s the closest meaning of the underlined phrase “kick off” in Paragraph 1?

A. leave B. invent

C. begin D. change

3.How does the app work through the 311 call system?

A. By replying to citizens’ calls.

B. By broadcasting traffic accidents.

C. By settling non-emergency problems.

D. By using its information about potholes.

4.Which can be Chokwe’s future target?

A. Encouraging more kids to create apps.

B. Taking part in more learning programs.

C. Making the app available for sale online.

D. Making the app include streets nationwide.

练习册系列答案
相关题目

When we first gave our daughters (then 13 and 15 years old) cell phones for emergencies, we made them sign an agreement in which we strictly ruled where and when they could use their phones and even we could check their every text message. However, in less than a year, we lost control of the situation.

There is a terrible reality that almost every teenager sends between 50 to 100 messages a day - some as many as 300, and 70% of teenagers admit hiding their online behavior from parents. According to a study, teenagers need as much sleep or more than they get as children - that's between 9 and 10 hours of sleep a night, but only 20% of them are getting it. When they don't get enough sleep, they perform poorly in school, feel very hungry, are more likely to have flu and are very emotional.

Recently, we adopted a "check in at tuck in" (盖被子时交手机) rule at our house, an idea I learnt from a parenting expert. It is very simple. At bedtime, when we "tuck in" our children for the night, they must "check in" their phones. They will probably bargain like this:

"But I use it for my alarm clock."

"I'll wake you up."

"My friends might need me."

"If there is an emergency, they can call the fixed phone and I'll wake you up."

A few weeks ago, when I drove my younger daughter to a friend's house for a sleepover, she handed me her phone. "I guess I should check this in now, since you won't be there to tuck me in tonight. I'll call you from Ellie's phone if I need you."

1.The first paragraph that the writer writes is to______.

A. show the writer's family life

B. lead to the topic of the passage

C. advise to buy cell phones for children

D. introduce the writer's two daughters

2.The cell phones were bought for children in hope of_______.

A. controlling their online behavior

B. working hard through the Internet

C. replacing alarm clocks with cell phones

D. keeping in touch if something urgent happened

3.Which of the following is NOT caused by sleeping less?

A. Performing well in school.

B. Feeling very hungry.

C. Being easy to have flu.

D. Being very emotional.

4.Which is probably the best title for the passage?

A. How to Take Control of Children

B. How to Help Children Sleep Well at Night

C. How to Get Children off Cell Phones at Night

D. How to Assist Children with Cell Phones

Being outspoken is a quality that,when used with skill and wisdom,can set you apart from the crowd.1.The quality of being outspoken is a positive and active skill.Here are some tips.

Gain self-knowledge(自找认识)through journaling.Knowing who you are,what you believe,and how you feel is the beginning of knowing yourself,and journaling is a great way to gain that knowledge.2.Not only can you know yourself better,journaling is an excellent tool to improve self-confidence.Self-confidence is the foundation of being outspoken.

3.In order to be outspoken,you have to believe that your voice has worth.You have to believe that your input will make any conversation better.And it probably will!It's different opinions that make conversations or debates interesting.

Overcome shyness.The fact that you're confident doesn't mean you like hearing your own voice.4. Overcoming a natural tendency towards shyness can seem horrible,but doing the opposite of your natural instinct can open up a whole new set of choices: brave choices.

Back up your opinion with facts.Some people feel uncomfortable having or expressing an opinion because they don't know much about a topic.5.

A.Be confident.

B.Open your mind and speak it out.

C.The next step is overcoming your shyness.

D.Practice journaling for 15 minutes each night before bed.

E.Being outspoken is to speak your mind—to be honest and frank.

F.Allowing the other parties to make their points fully can help you seem more reasonable.

G.You can combat this feeling and have more confidence about your opinion if you learn facts that can support your opinion.

One day, during the long summer holiday, Mrs. Martins took Brendon and his younger brother Kim to the beach. As soon as they got there, the two children _______ down to the sea to try out their new surfboards(冲浪板). They were soon swimming out to the _____ and riding back on their boards.

After a while, Brendon noticed that Kim was ____ away from him.

“Come back, Kim,” he shouted. “Mum said we have to stick together.” Kim put his arms over the side of his board and began paddling (划水) , but _____ getting closer, he began moving further away.

“Brendon, help!” called the young boy. “I’m ____ in a rip current (离岸流).” Brendon quickly paddled over to his _____.

“____ the back of my board and I’ll pull you to the beach,” he told the ____ boy. But the rip was too ______ and soon both Brendon and Kim were moving further from the beach.

“I can’t ____ see our beach any more,” cried Kim.

“Yes, but we’re not moving out of the sea any more. We’re just floating along the coast. See, there’s the next beach.” said Brendon ____. “We’re moving closer to it.” Sure enough, the current was now taking them closer to the beach and becoming_____.

“Right, it’s time to paddle,” said Brendon, suddenly full of ____.

Before long the children paddled to the beach _____ they sat for a few moments to _______ their breath. After a while, they_____ up their boards and started the long walk back to their mother. When they got there, they were _______ to find the beach full of people and boats.

“Thank goodness!” cried their mother running to _________ them. “We were just about to start a search. One minute you were in the waves in front of me and the next you were gone. I was so_____.”

“It’s OK,” said Brendon, hugging his mother. “We did just as you told us and ______ together.”

1.A. rushed B. got C. came D. jumped

2.A. beaches B. waves C. fields D. sands

3.A. turning B. breaking C. floating D. pulling

4.A. because of B. in addition to C. in case of D. instead of

5.A. found B. caught C. stricken D. rested

6.A. mother B. sister C. friend D. brother

7.A. Hold onto B. Put down C. Hold up D. Take off

8.A. determined B. frightened C. concerned D. excited

9.A. hard B. deep C. strong D. soft

10.A. still B. already C. hardly D. even

11.A. carefully B. sadly C. cheerfully D. eagerly

12.A. weaker B. clearer C. lower D. faster

13.A. spirit B. energy C. power D. force

14.A. how B. why C. where D. when

15.A. save B. feel C. hold D. catch

16.A. picked B. mixed C. rolled D. fixed

17.A. angry B. anxious C. hurried D. surprised

18.A. punish B. beat C. hug D. praise

19.A. disappointed B. worried C. embarrassed D. amazed

20.A. stuck B. shouted C. shook D. swam

1.Many students feel stressed around big moments in their lives like during final exams or when applying to college. Stress can be a pretty dangerous thing, because it can cause you to become sick. Here are some ways to deal with stress: Laugh Laughter is really one of the best medicines. When things get stressful, do things that make you laugh. Watch a funny movie.2.Chat with friends and family.

Take a Deep Breath Breathing is a great way to reduce your stress. Taking deep breaths or doing breathing exercises may seem silly, but it does help you relax and clear up your mind.

Plan Ahead Most students tend to study hard when test time comes close or do their homework right before it is due. However, having a plan will do a lot to decrease your stress. 3.

Sleep Sleep is another great tool in reducing stress.4.You should be getting at least 6 to 8 hours of sleep each night. As you know, a lack of sleep can be bad for your health.

Learn to Say “No” 5.So there are times when it is okay to say “no” to the requests of friends, families and teachers. If it is going to add too much to your stress level, just say so.

A. There are a lot of ways to deal with stress.

B. Sometimes life gets pretty stressful.

C. Read an interesting book.

D. Some stress comes from doing everything you’re asked to do.

E. It is necessary that we allow our bodies to recover from daily stress.

F. Give yourself the proper amount of time to complete tasks, and break those tasks down into manageable positions.

G. You can lose yourself for a while in the music.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网