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By “luxury(奢侈品)”, we mean "a pleasant and often expensive thing that is not necessary". From a historical point of view, things which were a luxury when they first came into being all became necessities later.
Anything, no matter luxurious it is, will become a necessity, when it is widely used. This is true of many of the present luxuries, among which mobile phones, cars, computers and many other things
(include). It is known to all that the purpose of the development of science is
(make) things easy for the mankind, not for only
small number of people.
, the first thing to do after a new invention occurs is to spread it so as to benefit
many people as possible. In the course of the spread, the luxury becomes decreasingly luxurious until
the end it becomes a necessity. This is an objective law, and
can be an exception.
With the quick (develop) of science and technology, the process for many things to become a necessity from a luxury will be greatly shortened. Anything that can be imagined will be invented and in no time becomes a necessity
(access) to ordinary people.
语法填空（阅读下面材料，在空白处填入所需的内容或括号内单词的正确形式，不多于3个单词
John Snow was a well-known physician in London. At that time, cholera was deadly disease and thousands of people died of it. People didn’t know its cause or its
. John Snow determined to face the
and solve the problem.
another outbreak hit London in 1854, he gathered information and made a map,
(mark) the exact places where all the dead people had lived. Through further investigations, he discovered that the water was to
, because it was polluted by the dirty water from London.
supporting evidence, John Snow announced that polluted water carried the germs. To prevent this from
again, John suggested that the source of all the water supplies
(examine) and new methods of
(处理) polluted water be found. Thus cholera was defeated in the end.
语法填空
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Whether you are a fan of athletics or not, chances are _____ you have heard of Usain Bolt--- the fastest man on the planet.
After the 29-year-old Jamaican had won victories in the 100- and 200-meter men’s dashes, Aug 29 saw him take home a third gold medal in a week at the 2015 World Athletics Championships in Beijing, ____ (lead) his national team to victory ___
__ the men’s 4× 400 relay final.
____ Reuters put it, “When __
___ comes to major championship sprinting(短跑)，Bolt simply has no equal.”This partly explains why the sprinter always ___
___ (wild) celebrates his wins. After each match, he does the trademark “Lightening Bolt” pose---putting one arm into the sky, as if he were about to throw a bolt of lightning at the stars. ___
___ 2012 London Olympics also saw him look back across the track at his competitors , do a couple of push-ups (俯卧撑)once he had stopped.
Some have called him a “showman”, but“ these will just add to the charm of Bolt---one of the most ____ (joy), self-confident athletes you’ll ever see”, wrote the Business Insider.
Indeed, now with six Olympic gold medals and 11 World Championships titles under his belt, the Jamaican star ____ (prove) “his ability to get the __
__ (good) out of his huge natural talent”, Reuters noted.
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Tom and Jack are good friends. They have dreamed about _____( take) a great bike trip. It was Tom who first had the idea to cycle __
____the entire Mekong River. They __
___ (ride) bicycles to travel along the Mekong River, ___
___source is in Qinghai Province. When it enters Southeast Asia, it travels slowly through low valleys to the plains, __
___ rice grows. ___
___ the difficulties , Tom and Jack were determined to begin their journey at an altitude of __
___( much) than 5,000 metres in Qinghai Province. During their journey , they enjoyed the continuous change of the weather. ___
__(finally), they reached Dali in Yunnan Province , where David and Sam joined__
__. __
__ four of them went on with their great bike trip.
阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
Singles’ Day falls on November 11th every year in China, ________ is recognized as a day for people who have no girlfriend or boyfriend. Couples and lovers have Valentine’s Day in
_______ (celebrate) of their love, but how about the singles? There must be a day they can celebrate even without a partner. That’s
_______ people created Singles’ Day.
On Singles’ Day many singles choose to say goodbye to their single lives, ________ (attend) blind date parties, and some people even decide to get
________ (marry) to strangers.
_______ this day has recently become more of a time for shopping, because many shops online will give customers great discount
________ (promote) their goods.
More and more people are ________ (will) to shop online to get what they want, and I am one of them. I just can’t help buying things
________ I need them or not.
________ (honest) speaking, some of the things that I bought have been put aside forever in my closet.
语法填空：
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Many of us were raised with the saying “Waste not, want not.” None of us, however, can (complete) avoid waste in our lives.
Any kind of waste is thoughtless. Whether we waste our potential talents, our own time, our limited (nature) resource, our money,
other people’s time, each of us can become more aware and careful. The smallest good habits can make a big
(differ). It’s a good feeling to know in our hearts we are doing our best in a world
is in serious trouble. By being devoted to
(save) oil, water, paper, food, and clothing, we are playing
part in cutting down on waste.
We must keep reminding (we)that it is easier to get into something than it is to get out of it. Actually, severe damage
(do) to our land is fairly recent in the history of our evolution. It’s time for us to say no to waste so that our grandchildren’s children
(be)able to develop well. We can’t solve all the problems of waste, but we can encourage mindfulness.