Su Hua is studying at Cambridge,UK.She has bought a bicycle and is worried about security(安全).Her friend,Kate,found this article and sent it to her.
| Introduction A lot of crime is against bicycles.About 150 000 bicycles are stolen every year and most are never found.You can prevent this happening by following a few careful steps. Basic Security Do not leave your bicycle in out-of-the-way places.Always lock your bicycle when you leave.Secure it to lampposts or trees.Take off smaller parts and take them with you,for example lights and saddles(车座). Locks Get a good lock.There are many different types in the shops.Buy one that has been tested against attack.Ask for a recommendation from a bike shop. Marking Security making your bike can act as a deterrent to a thief.It can also help the police find your bicycle.It should be clearly written and include your postcode and your house or flat number.This will provide a simple way to identify your bicycle. Registration There are a number of companies who will security mark your bicycle for you.They will then put your registration number and personal details on their computer database.Then if your bicycle is found it will be easy to contact you. Finally Keep a record of the bicycle yourself:its make,model and registration number.You can even take a photograph of it.This will prove the bicycle belongs to you. |
Which part of the text gives you information on how to lock up your bicycle when you leave it?
| A．Locks. | B．Marking. |
| C．Registration. | D．Basic Security. |
The underlined phrase “act as a deterrent to a thief”means_______.
| A．help you recognize your bike |
| B．help the police find your bicycle |
| C．stop someone stealing your bicycle |
| D．stop you worrying about your bike |
The article advises you to keep a record of your bicycle_______.
| A．in the bike shop and your computer |
| B．in a police station and a security company |
| C．in a security company and your university |
| D．by yourself and in a security company |
The main purpose of this article is_______.
| A．to tell you what to do if your bicycle is stolen |
| B．to suggest ways of keeping your bicycle safe |
| C．to give you advice on where to buy a good lock |
| D．to say why you shouldn’t keep your bicycle in a quiet place |
阅读下列短文，从每题所给的ABC和D四个选项中，选出最佳选项。
Washington, D.C. Bicycle Tours
Cherry Blossom Bike Tour in Washington, D.C
Duration: 3 hours
This small group bike tour is a fantastic way to see the world-famous cherry trees with beautiful flowers of Washington, D.C. Your guide will provide a history lesson about the trees and the famous monuments where they blossom. Reserve your spot before availability - and the cherry blossoms - disappear!
Washington Capital Monuments Bicycle Tour
Duration: 3 hours (4 miles)
Join a guided bike tour and view some of the most popular monuments in Washington, D.C. Explore the monuments and memorials on the National Mall as your guide shares unique
facts and history at each stop. Guided tour includes bike, helmet, cookies and bottled water.
Capital City Bike Tour in Washington, D.C.
Duration: 3 hours
Morning or Afternoon this bike tour is the perfect tour for D.C. newcomers and locals looking to experience Washington, D.C.in a healthy way with minimum effort. Knowledge guides will entertain you with the most interesting stories about Presidents. Congress, memories, and parks. Comfortable bikes and a smooth tour route（路线） make cycling between the sites fun and relaxing.
Washington Capital Sites at Night Bicycle Tour
Duration: 3 hours (7 miles)
Join a small group hike tour for an evening of exploration in the heart of Washington, D.C. Get up close to the monuments and memorials as you bike the sites of Capitol Hill and the National Mall. Frequent stops are made for photo taking as your guide offers unique facts and history. Tour includes bike, helmet, and bottled water. All rides are equipped with reflective vests and safety lights.
（1）Which tour do you need to book in advance?
| A． |
Cherry Blossom Bike Tour in Washington, |
B． |
C . |
| C． |
Washington Capital Monuments Bicycle Tour. |
D． | |
| E． |
Capital City Bike Tour in Washington, |
F． |
C . |
| G． |
Washington Capital Sites at Night Bicycle Tour. |
H． |
（2）What will you do on the Capital City Bike Tour?
| A． |
Meet famous people. |
| B． |
Go to a national park. |
| C． |
Visit well-known museums. |
| D． |
Enjoy interesting stories. |
（3）Which of the following does the bicycle tour at night provide?
| A． |
City maps. |
| B． |
Cameras |
| C． |
Meals. |
| D． |
Safety lights. |
Preparing Cities for Robot Cars
The possibility of self-driving robot cars has often seemed like a futurist's dream, years away from materializing in the real world. Well, the future is apparently now. The California Department of Motor Vehicles began giving permits in April for companies to test truly self-driving cars on public roads. The state also cleared the way for companies to sell or rent out self-driving cars, and for companies to operate driverless taxi services. California, it should be noted, isn't leading the way here. Companies have been testing their vehicles in cities across the country. It's hard to predict when driverless cars will be everywhere on our roads. But however long it takes, the technology has the potential to change our transportation systems and our cities, for better or for worse, depending on how the transformation is regulated.
While much of the debate so far has been focused on the safety of driverless cars(and rightfully so), policymakers also should be talking about how self-driving vehicles can help reduce traffic jams, cut emissions(排放) and offer more convenient, affordable mobility options. The arrival of driverless vehicles is a chance to make sure that those vehicles are environmentally friendly and more shared.
Do we want to copy - or even worsen - the traffic of today with driverless cars? Imagine a future where most adults own individual self-driving vehicles. They tolerate long, slow journeys to and from work on packed highways because they can work, entertain themselves or sleep on the ride, which encourages urban spread. They take their driverless car to an appointment and set the empty vehicle to circle the building to avoid paying for parking. Instead of walking a few blocks to pick up a child or the dry cleaning, they send the self-driving minibus. The convenience even leads fewer people to take public transport - an unwelcome side effect researchers have already found in ride-hailing(叫车) services.
A study from the University of California at Davis suggested that replacing petrol-powered private cars worldwide with electric, self-driving and shared systems could reduce carbon emissions from transportation 80% and cut the cost of transportation infrastructure(基础设施) and operations 40% by 2050. Fewer emissions and cheaper travel sound pretty appealing. The first commercially available driverless cars will almost certainly be fieldedby ride-hailing services, considering the cost of self-driving technology as well as liability and maintenance issues(责任与维护问题). But driverless car ownership could increase as the prices drop and more people become comfortable with the technology.
Policymakers should start thinking now about how to make sure the appearance of driverless vehicles doesn't extend the worst aspects of the car-controlled transportation system we have today. The coming technological advancement presents a chance for cities and states to develop transportation systems designed to move more people, and more affordably. The car of the future is coming. We just have to plan for it.
（1）According to the author, attention should be paid to how driverless cars can __________.
| A． |
help deal with transportation-related problems |
| B． |
provide better services to customers |
| C． |
cause damage to our environment |
| D． |
make some people lose jobs |
（2）As for driverless cars, what is the author's major concern?
| A． |
Safety. |
| B． |
Side effects. |
| C． |
Affordability. |
| D． |
Management. |
（3）What does the underlined word ＂fielded＂ in Paragraph 4 probably mean?
| A． |
Employed. |
| B． |
Replaced. |
| C． |
Shared. |
| D． |
Reduced. |
（4）What is the author's attitude to the future of self-driving cars?
| A． |
Doubtful. |
| B． |
Positive. |
| C． |
Disapproving. |
| D． |
Sympathetic. |
Plastic-Eating Worms
Humans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms.
Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms' chewing alone was not responsible for the polyethylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films. 14 hours later the films had lost 13% of their mass - apparently broken down by enzymes (酶) from the worms' stomachs. Their findings were published in Current Biologyin 2017.
Federica Bertocchini, co-author of the study, says the worms' ability to break down their everyday food - beeswax - also allows them to break down plastic. ＂Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well, ＂she explains, ＂The wax worm evolved a method or system to break this bond. ＂
Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠道微生物)?
Bertocchini agrees and hopes her team's findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process - not simply ＂millions of worms thrown on top of the plastic.＂
（1）What can we learn about the worms in the study?
| A． |
They take plastics as their everyday food. |
| B． |
They are newly evolved creatures. |
| C． |
They can consume plastics. |
| D． |
They wind up in landfills. |
（2）According to Jennifer DeBruyn, the next step of the study is to .
| A． |
identify other means of the breakdown |
| B． |
find out the source of the enzyme |
| C． |
confirm the research findings |
| D． |
increase the breakdown speed |
（3）It can be inferred from the last paragraph that the chemical might .
| A． |
help to raise worms |
| B． |
help make plastic bags |
| C． |
be used to clean the oceans |
| D． |
be produced in factories in future |
（4）What is the main purpose of the passage?
| A． |
To explain a study method on worms. |
| B． |
To introduce the diet of a special worm. |
| C． |
To present a way to break down plastics. |
| D． |
To propose new means to keep eco-balance. |
Find Your Adventure at the Space and Aviation(航空) Center
If you're looking for a unique adventure, the Space and Aviation Center (SAC) is the place to be. The Center offers programs designed to challenge and inspire with hands-on tasks and lots of fun.
More than 750,000 have graduated from SAC, with many seeking employment in engineering, aviation, education, medicine and a wide variety of other professions. They come to camp, wanting to know what it is like to be an astronaut or a pilot, and they leave with real-world applications for what they're studying in the classroom.
For the trainees, the programs also offer a great way to earn merit badges(荣誉徽章). At Space Camp, trainees can earn their Space Exploration badge as they build and fire model rockets, learn about space tasks and try simulated(模拟) flying to space with the crew from all over the world. The Aviation Challenge program gives trainees the chance to earn their Aviation badge. They learn the principles of flight and test their operating skills in the cockpit(驾驶舱) of a variety of flight simulators. Trainees also get a good start on their Wilderness Survival badge as they learn about water- and land-survival through designed tasks and their search and rescue of ＂downed＂ pilot.
With all the programs, teamwork is key as trainees learn the importance of leadership and being part of a bigger task.
All this fun is available for ages 9 to 18. Families can enjoy the experience together, too, with Family Camp programs for families with children as young as 7.
Stay an hour or stay a week - there is something here for everyone!
For more details, please visit us online at www.oursac.com.
（1）Why do people come to SAC?
| A． |
To experience adventures. |
| B． |
To look for jobs in aviation. |
| C． |
To get a degree in engineering. |
| D． |
To learn more about medicine. |
（2）To earn a Space Exploration badge, a trainee needs to .
| A． |
fly to space |
| B． |
get an Aviation badge first |
| C． |
study the principles of flight |
| D． |
build and fire model rockets |
（3）What is the most important for trainees?
| A． |
Leadership. |
| B． |
Team spirit. |
| C． |
Task planning. |
| D． |
Survival skills. |
My First Marathon（马拉松）
A month before my first marathon, one of my ankles was injured and this meant not running for two weeks, leaving me only two weeks to train. Yet, I was determined to go ahead.
I remember back to my 7th year in school. In my first P.E. class, the teacher required us to run laps and then hit a softball. I didn't do either well. He later informed me that I was ＂not athletic＂.
The idea that I was ＂not athletic＂ stuck with me for years. When I started running in my 30s, I realized running was a battle against myself, not about competition or whether or not I was athletic. It was all about the battle against my own body and mind. A test of wills!
The night before my marathon, I dreamt that I couldn't even find the finish line. I woke up sweating and nervous, but ready to prove something to myself.
Shortly after crossing the start line, my shoe laces(鞋带) became untied. So I stopped to readjust. Not the start I wanted!
At mile 3, I passed a sign: ＂GO FOR IT, RUNNERS!＂
By mile 17, I became out of breath and the once injured ankle hurt badly. Despite the pain, I stayed the course walking a bit and then running again.
By mile 21, I was starving!
As I approached mile 23, I could see my wife waving a sign. She is my biggest fan. She never minded the alarm clock sounding at 4 a.m. or questioned my expenses on running.
I was one of the final runners to finish. But I finished! And I got a medal. In fact, I got the same medal as the one that the guy who came in first place had.
Determined to be myself, move forward, free of shame and worldly labels(世俗标签), I can now call myself a ＂marathon winner＂.
（1）A month before the marathon, the author ____________.
| A． |
was well trained |
| B． |
felt scared |
| C． |
made up his mind to run |
| D． |
lost hope |
（2）Why did the author mention the P.E. class in his 7th year?
| A． |
To acknowledge the support of his teacher. |
| B． |
To amuse the readers with a funny story. |
| C． |
To show he was not talented in sports. |
| D． |
To share a precious memory. |
（3）How was the author's first marathon?
| A． |
He made it. |
| B． |
He quit halfway. |
| C． |
He got the first prize. |
| D． |
He walked to the end. |
（4）What does the story mainly tell us?
| A． |
A man owes his success to his family support. |
| B． |
A winner is one with a great effort of will. |
| C． |
Failure is the mother of success. |
| D． |
One is never too old to learn. |