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随时随地学习
随时随地学习
1、On social media sites, people tend to post only_____________updates that make them appear happy and friendly.
A.regular B.immediate C.false D.positive
2、I ________ my dream to be a pianist, but for the encouragement from that music teacher.
A.might have abandoned B.would abandon
C.should have abandoned D.were to abandon
3、 It is difficult a best friend.
A. to find B. finding C. find D. to be found
4、Have you known Dr. Jackson for a long time?
—Yes, since she________ the Chinese Society.
A．has joined
B．joins
C．had joined
D．joined
5、The old couple often take a walk after supper with their pet dog ____them.
A.following B.to follow C.followed D.being followed
6、A professor at the Academy has proposed that a fund ________ to raise money.
A．was established
B．would be established
C．be established
D．has been established
7、The peace talk between the two parties concluded in a friendly and frank _______, reaching a series of agreements.
A.Wind B.atmosphere C.spirit D.weather
8、Mr Black announced ________ his friends his engagement ________ Miss White.
A./; to B.to; to C./; with D.to; with
9、---Do you like the skirt?
---It soft.
A. is feeling B. felt
C. is left D. feels
10、When you make a decision to buy something, you must remember that a good name of product doesn’t __________ mean good quality of it.
A.essentially B.necessarily C.simply D.purposefully
11、Delete the short message at once! Many a man _________by such tricks up to now.
A．are taken in
B．is taken in
C．have been taken in
D．has been taken in
12、—What do you think of the science fiction, The Three-Body Problem, written by Liu Cixin?
—Oh, it’s really ________ wonderful book, which is worth reading________ second time.
A．the, a
B．a, the
C．a, a
D．the, the
13、It is we who ______ aware of danger first.
A．are
B．is
C．was
D．were
14、The sky is clear, so it’s not ________ to rain this afternoon.
A．false
B．certain
C．likely
D．fortunate
15、Teachers often encourage students ________ hard.
A．work
B．to work
C．works
D．working
16、He must have sensed that I _____ at him .He suddenly glanced at me and said quietly “Why are you staring at me like that ?”
A. was looking B. looked
C. have looked D. had looked
17、To make sure that children from poor areas can receive fair education, the government has planned to _____ more money to local schools.
A.announce B.allocate C.advocate D.appreciate
18、Life in the following ________time may be harder than before, but everyone should stick to his goals and make an effort to achieve them.
A．three-months
B．three-month
C．three months
D．three month
19、 David said that it was because of his strong interest in literature___hechose the course.
A. that B. what
C. why D. how
20、John’s success has nothing to do with good luck. It is years of hard work __________ has made him what he is today.
A. that B. what
C. which D. when
21、Kids Nature and Survival Camp
Set free your kids’ imagination and spirit of adventure at this camp, as they learn about the natural environment and the important skills of survival.
Activity overview
*4–Day Camp in the Santa Cruz Mountains
*Basic Survival Skills: Shelter, Water, Fire, Food
*Set your own custom（定制的）camp date
Details
*The camp will run for 5 hours each day: 9 am-2 pm.
*This class is 100% hands-on and very active. Everything your kids learn, they will do – no indoor classrooms or long lectures.
Dates offered
– We offer 1 public camp date each summer for ages 8–12. For 2019, that date is August 5 – 8 (9 am – 2 pm each day).
– We also arrange custom/private camp dates for both kids and teens all year round.
Extra information
**4–Day Camp: $395
**Add shuttle ride to/from downtown Santa Cruz for $160 ($40 per day)
**At this time we do not have shuttle service from the Silicon Valley side of the hill, but we do work to help organize carpools（拼车）from the Los Gatos/Saratoga/ Campbell area each year for interested parents.
【1】What will kids learn if they join the camp?
A.How to do long lectures. B.How to survive in the wild.
C.How to organize a camp. D.How to improve their imagination.
【2】What’s special about the class of camp?
A.It is free for all children.
B.Children could learn it online.
C.It is based on practicing in person to learn.
D.Kids could book a public camp date each spring.
【3】Which of the following provides shuttle service?
A.Los Gatos. B.Santa Cruz. C.Saratoga. D.Campbell.
22、It’s an all too common story: A young child walks off during a party and falls into a backyard pool. No one notices she’s missing——until it’s too late. When Grayson Barron learned of such a disaster in a friend’s neighborhood, the 18-year-old immediately jumped into problem-solving mode. The new pool alarm system he’s just developed sends out several types of warnings when someone or something splashes into an unguarded pool.
Grayson calls his floating system “The Buoy (浮标)”. A large splash will trigger its built-in sensors to send out a series of alerts——a flashing light, an alarm that sounds like a loud doorbell and a text to the owner’s mobile phone.
Grayson’s is not the first pool alarm, but the teen says others all have disadvantages. Some are very costly. Others can become stuck in corners of a pool. He wanted a low-cost option that was reliable (可靠的). Grayson 3-D printed the main part of his device, then attached sensors. He then equipped the device with a light, a speaker and a wireless network that can send texts. A battery, which is hooked up to solar panels, keeps the system charged for months.
While hard to design, the new system “is so easy to use,” says Grayson. “All I do is turn it on and throw it into a pool.” After that, he says, it just “does its thing”.
【1】Why was a child falling into a pool mentioned in the first paragraph?
A．To remind the importance of safety.
B．To prepare for the topic of the text.
C．To praise Grayson Barron.
D．To show accidents are everywhere.
【2】What can you learn from the last paragraph?
A．Grayson’s pool alarm can work by itself after being turned on and thrown into the pool.
B．The system of Grayson’s pool alarm is out of control.
C．Grayson’s pool alarm must be operated by man.
D．Grayson’s pool alarm is easy to design and easy to use.
【3】Which of the following is the disadvantage of Grayson’s pool alarm?
A．It is very expensive.
B．It s easy to get stuck.
C．It easy to lose balance.
D．It s difficult to design.
【4】What can be a suitable title for the text?
A．Teens’ Tech Will Send Alerts to Reduce Deaths
B．Grayson Barron Saved a Lot of Lives
C．Many People Are Drowned Every Year
D．Grayson Has Invented Much Device
23、When Jagadish Mahendran heard about his friend’s daily challenges navigating as a blind person, he immediately thought of his artificial intelligence work.
“For years I had been teaching robots to see things,” he said. Mahendran, a computer vision researcher at the University of Georgia’s Institute for Artificial Intelligence, found it ironic that he had helped develop machines — including a shopping robot that could “see” stocked shelves and a kitchen robot — but nothing for people with low or no vision.
After exploring existing technology for blind and low vision people like camera-enabled canes or GPS-connected smart-phone apps, he came up with a backpack-based AI design that uses cameras to provide instantaneous alerts.
“The camera data is processed right away as it’s captured,” he said.
That data makes it to a Bluetooth-enabled earphone that warns the user of any obstructions or route changes. Along with a backpack, the user also has to wear a vest and fanny pack, which houses the AI equipment, sensors, camera, and GPS.
Currently, the vest includes hidden Intel sensors and a front-facing camera, while the backpack and fanny pack house a small computing unit (运算单元) and power source. The Luxonis OAK-D unit, located in the vest and fanny pack, is an AI device that processes camera data almost instantly to interpret the world around the user.
Mahendran’s AI backpack isn’t for sale, but he says he is going to start a GoFundMe to equip any blind pedestrians who want to use the system.
【1】What does the underlined word “instantaneous” in Paragraph 3 probably mean?
A．Intelligent
B．Immediate
C．Accurate
D．Effective
【2】What do we know about Mahendran?
A．He thinks artificial intelligence is of little use to blind people.
B．He was not successful in helping people with eyesight trouble at first.
C．The AI backpack that he has developed is the best.
D．His AI backpack will be put on the market soon.
【3】What question is answered in Paragraph 5 and Paragraph 6?
A．What is a Luxonis OAK-D unit?
B．How is the AI backpack developed?
C．How is the captured data transferred to a Bluetooth-enabled earphone?
D．What does the AI backpack device consist of?
【4】What is the purpose of the text?
A．To prove that a helping hand is everywhere.
B．To explain the new trend of AI
C．To introduce a new AI device.
D．To give suggestions on how to help the blind.
24、Families should reduce exposure to synthetic chemicals found in food colorings, preservatives and packaging materials as a growing body of research shows they may harm children's health, according to a policy statement and technical report from the American Academy of Pediatrics released online.
The statement also suggests improvements to the food additives regulatory system, including updating the scientific foundation of the U. S. Food and Drug Administration safety assessment program and retesting all previously approved chemicals.
Q&A with the lead author
We asked Leonardo Trasande, Council on Environmental Health member and lead author of the policy statement, to tell us more about these concerns.
Q: What are the growing number of studies showing us?
A: Over the past two decades, an accumulating body of science suggests some food additives can interfere with a child's hormones, growth and development.
Potentially harmful effects of food additives are of special concern for children because they are more sensitive to chemical exposures because they eat and drink more, relative to body weight, than adults do and are still growing and developing. An early injury to their organ systems can have lifelong and permanent consequences.
Q: What additives does the statement highlight?
A: The additives of most concern, based on rising research evidence cited in the report, include: Bisphenols, such as BPA, used to harden plastic containers and line metal cans, can act like estrogen in the body which may potentially change the timing of puberty, decrease, fertility, increase body fat and affect the nervous and immune systems. BPA is now banned in baby bottles.
Phthalates, which make plastic and vinyl tubes used in industrial food production flexible, may affect male genital development, increase childhood obesity and contribute to cardiovascular disease. In 2017, the Consumer Product Safety Commission banned the use or some phthalates in child-care products such as teething rings.
【1】According to the American Academy of Pediatrics' report, people should _______to cope with the problem of food additives.
A．reduce the usage of food additives and establish new food protection system
B．update the food safety assessment program and check the approved chemicals again
C．improve the food additives regulatory system and retest all approved chemicals
D．try to avoid food additives in daily life and revise relevant rules on food additives
【2】Leonardo Trasande holds he view that food additives do more harm to children than adults because study shows ________.
A．children are more sensitive to what they eat and drink than adults
B．children usually eat and drink more unhealthy food than adults
C．children are just too young and weak to protect themselves
D．children's organs are easier to be damaged and hard to recover
【3】How many specific kinds of harmful effect caused by the additives are mentioned in the passage?
A．2.
B．7.
C．8.
D．1.
25、I took my six-year-old son Robert to a restaurant to celebrate his birthday. We just left the shopping center and Robert _________ his new shoes with joy. We walked towards the counter (柜台), where Peter, the waiter, _________ us with noticeable warmth.
“Welcome,” he said. “Wow, you look happy, little boy.” “I got new shoes,” Robert said with _________. He then lifted (抬起) his right foot in the air. “Smell it,” Robert asked. “Robert,” I said, trying to stop his _________ request, while Peter brought his nose to the shoe. “It smells amazing,” Peter said gladly. “Thank you for sharing your _________ with me. Now what does the birthday boy want to drink? It’s _________ me.” Robert jumped in _________ since sweet drinks were not usually allowed in our home. He considered the many _________ and decided on soda at last. Then Peter followed us as my son spent a great amount of time _________ a perfect table. He __________ held our drink until we were seated. I was __________ that the man gave my son special care.
After that, I often visited the restaurant. I found that although Peter had a(n) __________ job, he served everyone he met with love. In life, we often __________ people by their jobs. However, personal __________ actually comes from how they __________ others.
【1】
A．carried
B．returned
C．wore
D．cleaned
【2】
A．invited
B．understood
C．stopped
D．greeted
【3】
A．shyness
B．pride
C．anxiety
D．shame
【4】
A．informal
B．polite
C．improper
D．necessary
【5】
A．experience
B．joy
C．hobby
D．luck
【6】
A．for
B．from
C．by
D．on
【7】
A．peace
B．doubt
C．fear
D．excitement
【8】
A．choices
B．ways
C．differences
D．results
【9】
A．repairing
B．picking
C．checking
D．moving
【10】
A．calmly
B．seriously
C．patiently
D．sadly
【11】
A．worried
B．careful
C．confident
D．thankful
【12】
A．simple
B．boring
C．interesting
D．relaxing
【13】
A．question
B．judge
C．change
D．serve
【14】
A．honor
B．ability
C．value
D．duty
【15】
A．forgive
B．trust
C．protect
D．treat
26、Directions: Write an English composition in 120-150 words according to the instructions given below in Chinese.
最近几年，随着网络购物的迅速崛起，实体店的生意越来越冷清。可以说网络购物正在逐步取代实体店购物。你觉得这种发展趋势所带来的是利还是弊？请结合自身经历谈谈你的看法。
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