阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
At present, working staff in many cities of China have resumed work in 1. orderly manner. Employees need to wear masks when they go to work. 2. (natural), there are concerns that masks might be insufficient（不足）.
Good news is that since last month, companies in Guangdong province, Beijing and Shanghai 3. (begin) to produce a new type of face mask, 4. uses a nanomaterial (纳米材料）membrane (薄膜) to filter bacteria, viruses 5. other pathogens, according to local health and medical products authorities.
The new masks are designed to meet the same 6. (standard) of N95, meaning they filter particles of all sizes with at least 95 percent 7. (efficient).
The masks are also easy 8. (breathe) through and are pretty comfortable. Besides, this new type of masks can 9. (reuse) up to 20 times depending on the user’s setting and wear time, the authorities said.
The retail price（零售价）for the masks 10. (create) by companies from Shanghai will be around 15 to 20 yuan each.
I took the Harvard Summer School programme during my summer vacation. I really ________ the chance to learn there, which _______ my horizons greatly. As all _______ I took were humanitiesrelated, I _______ much time to reading in Harvard’s libraries. I enjoyed myself _______ I was there, either doing research for my papers or enjoying special edition books that had _______ over time.
When the library first came into _______, I looked at it with respect and was deeply _______ by its neoclassical design. The design is inspiring. It occurred to me that _______ as Greek temples were houses of gods, the library was a temple of ________.
On opening a pair of heavy elegant metal doors, I was ________ in warm light. Fascinated, I wandered around the ________ library, finding one treasure after another. One ________ caught my interest is the donor Widener. He was crazy about ________ rare old books, and one of his most precious collections immediately attracted my ________. A 500yearold book quietly ________ its golden letters. This book represents Harvard’s ________ as a guardian of, and contributor to, the long history of thought.
Harvard’s library is rather ________. One can hear the rustle of pens on paper as countless students study ________ inside it. For me, the library, as well as the courses, ________ Harvard’s place as the home of committed scholars.
1.A.accepted B.recalled C.appreciated D.favored
2.A.broadened B.limited C.improved D.satisfied
3.A.challenges B.courses C.experiments D.routines
4.A.attached B.attracted C.exposed D.devoted
5.A.if B.while C.before D.though
6.A.abandoned B.revised C.yellowed D.discovered
7.A.view B.power C.effect D.existence
8.A.disappointed B.amused C.delighted D.impressed
9.A.just B.even C.again D.instead
10.A.growth B.belief C.imagination D.knowledge
11.A.trapped B.involved C.bathed D.absorbed
12.A.satisfactory B.awesome C.plain D.comfortable
13.A.successfully B.casually C.suddenly D.especially
14.A.collecting B.researching C.introducing D.copying
15.A.praise B.attention C.attempt D.care
16.A.brought on B.applied to C.showed off D.set aside
17.A.example B.department C.role D.scene
18.A.holy B.silent C.famous D.superb
19.A.attentively B.obviously C.generally D.freely
20.A.elects B.expands C.appoints D.explains
How Work Experience can Benefit A College Student
Competing in the job market is now a serious and frightening scene. 1.. It has therefore become important that you have something that allows you to stand out from the crowd.
Get to try out things
One of the greatest things about being a working student is that it allows you to try out things. You get to see if you are good enough for the industry. 2..
By working for a company, you will be able to see what they believe in and what it is like working in that type of environment.
Personal development
By getting work experience, you not only improve professionally, but also improve on a personal level. 3.. For example, if you work in a sales environment you will likely become more outspoken and confident. As a result, exposing yourself early to the workplace improves you on different levels.
4.
This is often something that isn’t thought about when students think about work experience, but one of the greatest things about it is that you can actually use it as an opportunity to travel around the world. 5.. This also widens your view of the world. Besides, it is important that you have international experience.
A.You can work abroad
B.Stand out to potential employers
C.And you also see if the industry is a good fit for you
D.This is something that is very helpful in any industry
E.This gives you a chance to learn about different cultures
F.You will discover that you improve your social skills in the workplace
G.With more people going to college, it means more people are fighting for the same job
Next time you raise an eyebrow at the views of your friend, brother, sister or colleague, remember they could be helping to make you smarter. New research shows that intelligence is not fixed but can be improved throughout adulthood by family members, bright mates and intellectually challenging careers. The study challenges the commonly held belief that intelligence is fixed by the age of about 18.
Scientific consensus (共识) suggests intelligence is controlled by genes, with environmental factors such as schooling and nutrition playing a part up to this age. After this point, IQ scores become steady. But James Flynn, professor at the University of Otago in New Zealand, argues that people can “upgrade” their intelligence throughout their lives. He believes intellectual stimulation (刺激)from other people is important as the “brain seems to be rather like a muscle—the more you use it, the stronger it gets”. However, the opposite is also true—so people who share a home or workplace with the intellectually challenged risk seeing their IQ levels nosedive as a result.
Professor Flynn analyzed US intelligence tests from the last 65 years and created new IQ “age tables”. He found a bright ten-year-old with brothers and sisters of average intelligence will suffer a five to ten point IQ disadvantage compared to a similar child with equally bright brothers and sisters. However, children with a low IQ could gain six to eight points by having brighter brothers and sisters and special educational treatment to help pull them up.
Professor Flynn concluded that although genetics and early life experiences determine about 80% of intelligence, the remaining 20% is linked to lifestyle. This means people can raise their IQ, or allow it to fall, by ten points or more. He suggests the best way to improve IQ levels is to socialize with bright friends, and find an intellectually challenging job.
1.What do people commonly believe?
A.People1 s IQ levels fall as they get older and older.
B.It’s wise for people to share family members’ views.
C.The intelligence changes no more during adulthood.
D.Doing challenging deeds is good for one’s intelligence.
2.The underlined word “nosedive” in Paragraph 2 most probably means ________.
A.vary B.fall C.change D.develop
3.Which of the following can help improve one’s intelligence according to Professor Flynn?
A.Staying with smart people. B.Making many friends.
C.Doing exercise every day. D.Learning from parents.
4.The purpose of the text is to ________.
A.persuade B.advertise C.entertain D.inform
With only about 1,800 pandas left in the world, China is desperately trying to clone the animal and save the endangered species (物种). That’s a move similar to what a Texas A&M University researcher has been undertaking for the past five years in a project called “Noah’s Ark”. Noah’s Ark is aimed at collecting eggs, embryos (胚胎), semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A&M University Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2,000 species of mammals, birds and reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years. This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take three to five years to complete.
“The nuclear transfer of one species to another is not easy, and the lack of available panda eggs could be a major problem,” Kraemer, who is one of the leaders of the Project at Texas A&M, the firstever attempt at cloning a dog, believes. “They will probably have to do several hundred transfers to result in one pregnancy (怀孕). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer.
“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”
1.The aim of “Noah’s Ark” project is to ________.
A.make efforts to clone the endangered pandas
B.transfer the nuclear of one animal to another
C.collect DNA of endangered animals to study
D.save endangered animals from dying out
2.The underlined word “groundbreaking” can be interpreted as ________.
A.especially new B.pioneering
C.damaging D.troublemaking
3.What may be the best title for the passage?
A.China’s Success in Panda Cloning
B.The First Cloned Panda in the World
C.Exploring the Possibility of Cloning Pandas
D.China — the Native Place of Pandas Forever
4.From the passage we know that ________.
A.about two thousand species will probably die out in a century
B.scientists try to implant a panda’s egg into a rabbit
C.Kraemer will work with Chinese scientists in clone researches
D.Kraemer and his team have succeeded in cloning a dog
There is a man watching me. He doesn’t think I know he’s there, but I do. He carries some sort of machine and it is making me nervous. I’ve been using the back entrance (入口) because I don’t think he knows it is there. I worry about going outside but with a young family to feed I have to. I go and come back quickly. So far I have managed to bring in the meals without him realising I’m gone. The family know something is wrong even though I try to keep it from them by acting normally and keeping them away from the front entrance.
My family are getting bored. They need to stretch their legs and run and play in the open. We can’t stay prisoners like this for much longer. I’m going out for supplies and decide that if the watcher is still there when we have eaten I will face the danger.
The time has come, the meal is over and he is still there, still watching. I push the family back and away from the entrance. I walk slowly down the passage and outside. I take a few steps forward and sit down—I stare at him. He seems unsettled (混乱的) by my appearance and moves his machine about. The birds nearby go silent as I break into a run. I must protect my family.
“Good evening and welcome to the BBC news at ten. Here are the latest headlines. Filming of David Attenborough’s latest wildlife documentary came to a dramatic and unexpected stop today after a vicious (凶猛危险的) tiger attack, but Mr. Attenborough said he was just thankful that she only warned him off as she could easily have killed him. The BBC has been told that no further filming will take place in that location.”
All is quiet. He has gone. No one is watching. My family are safe.
1.“I” tried to act normally in order to ________.
A.think out an idea B.give warnings to the man
C.calm down “my” family D.show “my” courage
2.What did “I” do to protect the family?
A.“I” scared away the man at last. B.“I” prevented “my” kids from going out.
C.“I” reported it to the BBC news. D.“I” bravely fought with the man.
3.The machine held by the man might be a ________.
A.telescope B.camera
C.twoway radio D.gun
4.The passage is intended to ________.
A.convince us of an idea B.describe an adventure
C.give us a warning D.tell an interesting story
