第29练 科技类（三）
单词识记： simplify software convenience criterion suppose system technical universal virus technology advance telescope document planet screen solar gravity print digital download 短语扫描： information products信息产品 in the field of science 在科学领域 in storage储存 living standard生活水平 negative effect负面影响 shop on the Internet网购 stand out杰出 side effects 副作用 watch over看守；监视 contribute (sth.) to sth.向……贡献…… [跟踪训练] Ⅰ.语境填词
1．She ________(simplify) the instructions so that the children could understand them.
2．The insurance industry has produced its own proposals for ________(universe) health care.
3．The foreign ministers of the two countries signed a lot of ________(文件) today. 4．There is no doubt that spending too much time surfing the Internet or watching TV ________(导致) to nearsightedness, a serious problem of young people in many countries.
5．The ________(criterion) for entry are that applicants must design and make their own work.
Ⅱ.单项填空
6．“________！ There’s a car coming，” the mother shouted to the playing children.
A．Watch over C．On the watch
B．Watch for D．Watch out
7．He is supposed to make his visit to the club soon，but I’ m not sure whether he________or not. A．does C．had
B．is D．will
8．Judging the voice not by appearance but by the voice itself makes the TV show ________ from numerous amusement programs. A．hold out C．stretch out
B．stand out D．turn out
9．________ is known to all，China will be an________ and powerful country in 20 or 30 years or so. A．That；advancing C．As；advanced
B．This；advanced D．It；advancing
10．We bought the house for its ________.It is very near the shop where I work. A．character C．convenience
B．value D．construction
Ⅰ.阅读理解
An electric car is powered by an electric motor instead of a gasoline engine.The electric motor gets energy from a controller，which regulates the amount of power，and this is based on the driver’s use of an accelerator pedal.The electric car(also known as electric vehicle or EV) uses energy stored in its rechargeable batteries，which are recharged by common household electricity.
Unlike a hybrid(混合的) car，which is fueled by gasoline and uses a battery and motor to improve efficiency，an electric car is powered exclusively by electricity.Historically，EVs have not been widely adopted because of limited driving range before needing to be recharged，long recharging time，and a lack of commitment by automakers to produce and market electric cars that have all the comforts of gas-powered cars.That’s changing.As battery technology improves by simultaneously
increasing energy storage and reducing cost，major automakers are expected to introduce a new generation of electric cars.
Electric cars produce no tailpipe emissions，reduce our dependency on oil，and are cheaper to operate.Of course，the process of producing the electricity moves the emissions further upstream to the utility company’s smokestack，but even dirty electricity used in electric cars usually reduce our collective carbon footprint.
Another factor is convenience.In one trip to the gas station，you can pump 330 kilowatt-hours of energy into a 10-gallon tank.It would take about 9 days to get the same amount of energy from household electric current.Fortunately，it takes hours and not days to recharge an electric car，because the process is much more efficient.
Just as the major car companies were reducing their electric car programs in 2004 and 2005，the perfect storm was brewing on the horizon：a combination of growing acceptance of global warming，oil price increases and runaway sales of the Toyota Prius，a hybrid car which uses gas and electricity.The major auto companies went right back to the drawing board and emerged with big plans for electric cars.As global oil supplies are used up and oil becomes more and more expensive，electric cars are the logical and ecological alternative for the future.
1．Which of the following was a reason why electric cars were not popular? A．Electric cars were not comfortable. B．Electric cars were much more expensive. C．Automakers failed to market electric cars. D．Recharging electric cars took a long time. 2．The main purpose of the text is to________. A．show readers how hybrid cars work B．persuade readers to buy electric cars C．give readers information about electric cars
D．prove that electric cars are superior to gasoline cars
3．What’s the writer’s attitude towards the future of electric cars? A．Negative. C．Objective. Ⅱ.任务型阅读 (2016·镇江一模)
A selfie stick is a monopod(单脚架) used to take selfie photographs by positioning a smart phone or camera beyond the normal range of the arm.The metal sticks are
B．Positive. D．Doubtful.
typically extendable，with a handle on one end and an adjustable clamp(夹子) on the other end to hold a phone in place.Some have remote or Bluetooth controls，letting the user decide when to take the picture，and models designed for cameras have a mirror behind the viewscreen so that the shot can be lined up.In contrast to a monopod for stabilizing a camera on the ground，a selfie stick’s arm is the thickest and strongest at the opposite end from the camera in order to provide better grip(控制) and balance when held high up in the air.
Homemade selfie sticks could date back as early as 1925.A photo from that year shows a man taking a photograph of himself and his wife，with the aid of a long pole which is pointed towards the camera and out of frame.Amateur box cameras of the period would not have been able to capture a self-portrait in focus when held at arm’s length，requiring photographers to use remote shutter(快门) devices such as cables or sticks.
The 1983 “Minolta Disc-7” camera had a convex mirror on its front to allow the composition of self-portraits，and its packaging showed the camera mounted on a stick while used for such a purpose.A “telescopic extender” for compact handheld cameras was patented in the US in 1983.Canadian inventor Wayne Fromm patented his Quik Pod in 2005，and it became commercially available in the United States the following year.Despite positive reviews for the Quik Pod over the next few years in mainstream press，the term “selfie stick” itself did not become widely used until 2014.
People attach their cellphone or camera to the end of the selfie stick，raise it in front of themselves and then make a sound or press a shutter button on the stick handle which is connected to the camera (usually using a port such as a headphone jack)，or press a button on a wireless remote contrd (often via Bluetooth)，or use the camera’s built-in timer to take a photo after a number of seconds have passed.The first two methods usually adapt the device’s physical means of pressing the camera shutter such as the volume controls or the dedicated camera button of the device，which are replicated(复制) on headphones with on-cord controls，and are seen by the device as headphone devices.
The device gives more practical use in situations that require assistance for difficult photographs.It allows the user to take photographs in otherwise dangerous situations such as taking a photo over a cliff or from the door of an airplane.The device is sometimes used to take selfies that involve the photographer inside a moving vehicle.
