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题型:阅读理解 题类:模拟题 难易度:普通

广西北海市2019届高三英语第三次模拟考试试卷

阅读理解

    A study found wireless signals are able to pass through bags and suitcases to judge the sizes of dangerous metal objects and identify them." These items could include weapons, chemicals, laptops and batteries for bombs, "the research team said on Tuesday.

    Research suggested that Wi-Fi can now be used to estimate the volume of liquids such as water, acid, alcohol and other chemicals for explosive material. The study led by researchers at the Wireless Information Network Laboratory (WINLAB) in the School. of Engineering showed a wireless device with two to three antennas(天线)that could be fitted in existing Wi-Fi networks.

    The detection system analyzes what happens when wireless signals go through and bounce off objects or materials. The approach, which the paper states, works by separating the wireless interference(干扰)caused by two factors of objects-the material and shape." Most dangerous objects such as weapons are usually metal or liquid, which have significant interference," researchers said.

    When it was tested on a backpack, the accuracy rate topped 95 percent. "But the accuracy dropped to about 90 percent when objects inside bags are wrapped. And the tech could save lives if used in museums, stadiums, theme parks or schools," the team said, noting its design can inspect bags or luggage without being an exposure to privacy.

    It uses channel state information (CSI) that is readily available in low-cost Wi-Fi devices." This could have a great impact on protecting the public from dangerous objects," said Yingying Chen, a co-author of the study," There's a growing need for that now. In large public areas, it's hard to set up expensive screening equipment like what's in airports. Manpower is always needed to check bags and we want to develop a method to try to reduce manpower.”

    The peer-reviewed study, which recently won a best paper award at the 2018 IEEE Conference on Communications and Network Security, is now published online." Future work will continue to focus on ameliorating the accuracy of identifying objects and imaging shapes and volumes," researchers said.

(1)、What does paragraph 3 talk about?
A、The function of the technique. B、The way the device works. C、The principle the study is based on. D、The benefit of the study findings.
(2)、What's the advantage of the device?
A、It saves people in danger of natural disasters. B、It passes through bags without damaging them. C、It uses antennas to pick up networks' signals. D、It protects personal information from being disturbed.
(3)、Why did the researchers study the device according to Yingying Chen?
A、To save money and labour. B、To make full use of Wi-Fi. C、To protect passengers' privacy. D、To research dangerous objects.
(4)、Which of the following can replace the underlined word “ameliorating" in the last paragraph?
A、Confirming. B、Improving. C、Discovering. D、Examining.
举一反三
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Tips for Staying Sharp

    It's not abnormal to feel out of it from time to time or perhaps you're feeling a bit sluggish(迟钝的)when it comes to remembering things. If you're worried about your forgetfulness, try out these five tips to stay sharp.

    {#blank#}1{#/blank#}

    You've probably heard the term “you are what you eat.” If you decide to eat sugary foods that are heavy with fats then expect to feel lazy and have no energy. But if you decide to eat fruits, vegetables and make other healthy eating decisions you'll find that you're full of energy.

    Never stop learning

    Challenge yourself constantly---whether it is puzzles, reading, cooking or other tasks that will keep your mind working. If your mind is always learning new things and active, you'll realize that it's much easier for you to learn new things and to function. {#blank#}2{#/blank#}

    Stay fit

    Being in good health and staying in shape is a big part of staying sharp. {#blank#}3{#/blank#} If you choose to be lazy then your body is not going to give you the energy that requires remembering things and completing tasks. However, if you put forth the effort into being health then your body will expel(释放)the energy you need to achieve your goals.

    Ensure enough sleep

    Be sure to get the necessary amount of sleep that your body needs to function on a daily basis. {#blank#}4{#/blank#} It also helps your body build up an energy reserve so you can improve your ability to focus and avoid distractions.

    Socialize more

     {#blank#}5{#/blank#} Social interaction will help you develop multitasking, problem solving and other skills that are necessary in life to keep your mind sharp.

A. Feed your brain

B. Avoid eating too much

C. Your body will only give you what you put into it

D. Lack of sleep contributes to tiredness and slow reaction

E. Conversations require individuals to stay aware and active

F. According to studies, sleep helps strengthen and recover your memories

G. Remember you brain is a muscle and if you want to get the most out of it, you must use it

任务型阅读

    We all have to make decisions all the time, and we have an abundance of choices, ranging from tiny issues to vital ones. Unfortunately, people often find it hard to make decisions{#blank#}1{#/blank#} If you would like to improve your skill of decision making, here are four suggestions for you. Don't expect to have it all.

    {#blank#}2{#/blank#} You can't order every delicious dish on the menu. And there will be paths not taken, careers not chosen, to name a few. You can imagine some “what if' situations if you must, but do not let them take up too much space in your brain.

    {#blank#}3{#/blank#}

    It's often good to think through your decisions. But don't overdo it. Research can reach a point where returns begin to reduce, which makes it confusing more than clarifying. Many good decisions can be made based as much on intuition (直觉) as on careful assessment of endless data.

    Don't delay making decisions.

    Yes, there is a time to put off making a decision. Perhaps you need more information{#blank#}4{#/blank#} Or it's likely that you wait for a less stressful time. Just don't wait so long that the decision is made by your own indecisiveness.

    Don't be hard on yourself.

    You decide to go on a voyage. You choose an expensive liner. Everything should work out just right. Only you didn't expect a bug that ran around on the ship, making you and your family sick for five days{#blank#}5{#/blank#}But please remember it is unavoidable sometimes.

A. Don't spend too much time thinking.

B. It is an important source of information.

C. Don't count on emotion to make decisions.

D. Maybe you wish to consult with your advisor.

E. You may regret making such a stupid decision.

F. That means the skill of good decision-making counts a lot.

G. Decisions force us to close the door on other possibilities.

阅读理解

    As a teenage rock fan, all Dennis Vorreyer really expected of the Lollapalooza music festival in Chicago two weekends ago was the chance to see his favorite bands perform live.

    But he and his father, Jeffrey, who accompanied him to the festival, signed up for Lollapalooza's text-message network, and thus learned about a guitar-playing contest taking place there. Dennis, 14, entered and won a new Gibson guitar. Tad Kubler, the lead guitarist for the Hold Steady, who was involved in the contest, then invited Dennis to perform with the band as it closed its set.

“Having your cell phone everywhere is important for everybody now,” Dennis said. “I never dreamed of playing Lollapalooza.” The modern mobile phone — equipped with camera, Internet access and more— has proved to be a liability for some performers, like Akon and Beyonce, whose regrettable moments were captured by fans and then immortalized on YouTube and similar sites. But for the fans themselves, mobile phones are becoming as important an accessory as an all-access wristband. Beyond using them to record a short souvenir, they are becoming a ticket to everything from free ringtones to VIP treatment.

    On Gwen Stefani's recent tour, as many as 20 percent of the audience at some shows agreed to pay 99 cents for text messages and the chance to win better seats, according to the mobile marketing company Impact Mobile. At festivals like Lollapalooza, thousands of fans sign up to receive continuous updates from concert organizers about promotions and special events.

Even when there is no fee, the service comes at a price: fans must give their phone numbers to marketers. And purists — and some artists — disapprove of fans pecking out text messages or snapping pictures during performances. Still, the arrival of a new generation of phone-based activities could add a new twist to live events at a time when rising ticket prices have discouraged many concertgoers.

阅读短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

    If you cannot afford to travel in any class above economy, flying generally sucks, either a little or a lot, depending on your tolerance level. But it especially sucks if you are too wide for the airline's design.

    Just getting to your seat can be a challenge, as your hips (臀部,髋) bounce from seat to seat on each side of the aisle (过道). If someone is standing up to put things in the overhead locker, there is a decision to be made about whether it's worth trying to squeeze past. Everything is just slightly too small: the seats, the overhead lockers, even the bathrooms—and those, it seems, are getting even smaller.

    The Washington Post recently reported that, on some newer planes flown by American, Delta and United airlines, the bathrooms in economy class are just 61cm wide: about 25cm narrower than the average portable toilet, and roughly the width of the average dishwasher. Your face might be the only thing you can poke in there comfortably—which makes it a poor design, considering what a passenger is likely to need the bathroom for.

    According to the manufacturer, these "Advanced Spacewell" bathrooms make space for six additional passengers, which is great for the airlines' financial bottom line. But what about the other bottom line? Concerning, well, bottoms that can't fit into their planes' bathrooms?

    As bodies get bigger and aeroplane spaces get smaller, the wide among us have come up with solutions. Armrests that turn us into sausages (香肠) can be pulled up, or slowly encased (围住,包起) into the soft flesh of our sides until we go numb (麻木). We can ask the flight attendant to get us a seat-belt extender, if security has confiscated the one we brought with us, as can sometimes happen. But squeezing into a tiny toilet and closing the door behind us? Not workable.

    Unlike the impossible task of squeezing down the aisle to your seat, or the side-to-side dance necessary to get big hips past the armrests, fitting into a space just 61cm wide is not just a challenge—it is almost impossible. It is not like missing out on an option for the in-flight meal—a bathroom is as essential as a safety-compliant seat belt, or the air that is pumped in to the cabin (飞机舱). If airlines are not willing to make space for us, bigger passengers may have no option but to reconsider booking a flight at all.

 阅读七选五

Do you have plastic bottles at home?Did you throw empty plastic bottles into the trash,just because you didn't know how to use them?However,there are many interesting things you can do with empty plastic bottles! {#blank#}1{#/blank#}

● Spray for your garden. {#blank#}2{#/blank#} Then adjust the rubber bracelet to the mouth of the bottle,and make sure the plastic bottle mouth neatly fits through the hole in the lid.When everything is ready,you will have a spray bottle for your garden! 

● Separate eggs.Do you find it challenging to separate eggs?In some recipes,you just need the yolks (蛋黄) or the whites,but the process is a bit complicated. {#blank#}3{#/blank#} Break the egg into a bowl.Remove the lid from the bottle and pinch a little.Then continue the pressure,put the ends into the yolks and stop the pressure.In this way,the yolks will be absorbed into the bottle while the whites will remain on the plate. 

{#blank#}4{#/blank#} When making biscuits,you may need tools to cut them.Plastic bottles will do again.Making a homemade biscuit cutter from plastic bottles is the best way to reuse plastic bottles,as you never know the situation when you need to use it.You just need a small or a large plastic bottle depending on your needs. {#blank#}5{#/blank#} And then take one of two sections to cut the biscuits. 

A.Cut off the biscuits. 

B.Make biscuits easily. 

C.Cut the bottle into half. 

D.So next time take advantage of them. 

E.Use bottles to kill garden pests effectively. 

F.Don't worry,and you can solve this problem with a plastic bottle. 

G.For this trick,you only need to drill a few holes in a plastic bottle.

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