根据首字母提示及句意，在句中空白处填入适当的单词。
1.Good n_____ is essential if patients are to make a quick recovery.
2.This is the o_____ painting, and the others are copies.
3.In some countries, witnesses in court have to s_____ on the Bible.
4.Those who i____ hunt rare and endangered wild animals are to be sentenced to prison.
5.Great efforts have been made in ecological c____ and environmental protection in recent years.
6.As long as we are united, there will be no difficulty that cannot be o____.
7.Only when applied on a global scale can the achievements of science and technology play a m____ role and better benefit humankind.
8.A____ by cheerful music, people began to dance on the large square.
9.Over the years, overseas Chinese have enthusiastically supported and p____ in China's economic construction in various ways.
10.The research shows the urban air quality this year remains unchanged, compared with the p____ year.
阅读下面短文，在空白处填入适当的单词或括号内单词的正确形式。
An umbrella is what we easily forget and leave behind in our daily life. When the weather is fine, we certainly don’t think of it; only when it’s raining, we’ll carry it purposefully. But as soon as the rain stops, most likely we’ll forget 1. we’ve put it. It has to wait patiently and pitifully for 2. owner to claim it, otherwise it’ll remain alone as a deserted umbrella. Once I suddenly found my longtime used umbrella “disappeared”. I really 3. ( regret) quite some time for my own carelessness. Several days later, out of my 4. (expect), I saw it quietly stand in a corner of the house where I worked. I was extremely glad to regain it. Looking carefully at it, though it was so familiar 5. me, I found for the first time that its plastic handle 6. (wear) out as a result of repeated rain-wash for years. I sought for it only when I needed it. It occurred to me that I should have paid 7. (much) attention to it.
It sets me 8. (think). Around us there is always a person giving us support in silence just like 9. old umbrella that protects us from the rain or any bad weather. Will you think of those individuals 10. have helped you get through difficulty when you are leading a comfortable life?
The Gift of Forgiveness
The summer I turned 16, my father gave me his old 69 Chevy Malibu convertible. What did I know about classic cars? For me, the important thing was that Hannah and I could _______ around Tucson with the top down.
Hannah was my best friend, a year younger but much _______. That summer she _______ with a modeling agency, doing catalog and runway work.
A month after my birthday, Hannah and I went to the movies. On the way home, we _______ at the McDonald’s drive-through, putting the fries in the space between us to _______. “Let’s ride around awhile,” I said. It was a clear night, hot, full moon hanging low over the desert. Taking a curve (弯) too _______, I ran over some dirt and fishtailed. I then moved quickly through a neighbor’s landscape wall and drove into a full-grown palm tree. The front wheel came to rest halfway _______ the tree trunk.
There were French fries on the floor, the dash (仪表盘) and my lap. An impossible amount of _______ was on Hannah’s face, pieces of skin hanging around her eyes. We were taken in separate ambulances. In the emergency room, my parents spoke quietly: “Best plastic surgeon (整容医生) in the city…but it is more likely the _______ of her modeling career…”
We’d been wearing lap belts, ________ the car didn’t have shoulder belts. I’d broken my cheekbone on the steering wheel; Hannah’s ________ had split wide open on the dash. What would I say to her?
When her mother, Sharon, came into my hospital room, I started to cry, preparing myself for her ________. She sat beside me and took my hand. “I drove into the back of the car of my best friend when I was your age,” she said. “I completely ________ her car and mine.”
“I’m so sorry,” I said.
“You’re both ________,” she said. “Everything else doesn’t matter.” I started to explain, and Sharon stopped me. “I ________ you. Hannah will too.”
Sharon’s forgiveness allowed Hannah and me to get back in the car together that summer, to stay ________ throughout high school and college, to be in each other’s weddings. I think of her gift of forgiveness every time I tend to feel angry about someone for a perceived（可感知到的）________, and whenever I see Hannah. The scars (伤疤) are now ________ and no one else would notice, but in the sunlight I can still ________ the faint, shiny skin just below her hairline—for ________, a sign of forgiveness.
1.A.drive B.run C.wander D.march
2.A.stronger B.healthier C.taller D.smaller
3.A.competed B.chatted C.signed D.bargained
4.A.stopped B.ate C.aimed D.stood
5.A.catch B.share C.hold D.spare
6.A.fast B.seriously C.softly D.slow
7.A.across B.up C.below D.along
8.A.blood B.petrol C.water D.sweat
9.A.path B.base C.point D.end
10.A.and B.but C.or D.so
11.A.shoulders B.arms C.chest D.forehead
12.A.anger B.regret C.sorrow D.concern
13.A.attacked B.dragged C.damaged D.removed
14.A.alike B.relieved C.injured D.alive
15.A.help B.love C.understand D.forgive
16.A.sisters B.friends C.classmates D.colleagues
17.A.need B.effort C.wrong D.threat
18.A.left B.marked C.shown D.faded
19.A.touch B.see C.feel D.learn
20.A.them B.you C.me D.her
“The calm before the storm” is a very familiar expression. It is usually used to describe a peaceful period just before a very stressful situation or a tense argument. 1. They noted that before certain storms the seas would seem to become calm and the winds would drop.
But why is it often so calm before a storm? 2. According to US website HowStuffWorks, a calm period occurs because many storms, tornadoes and hurricanes draw in all the warm and damp air from the surrounding area. As this air rises into the storm clouds, it cools and acts as “ fuel for the storm ,like petrol in a car. “
Once the storm has taken all the energy it can from the air, it is pushed out from the top of the storm clouds and falls back down to ground level. 3. So once it covers an area, it causes a calm period before the storm.
4. First count how many seconds there are between a flash of lightning and a clap of thunder, roughly three seconds equal one kilometer. A good judgement is that if your count is below 30 seconds, you should seek shelter straight away.
However, due to the complexity of storm system ,calm doesn't always go first. So, your best bet is to keep yourself updated with weather reports for any predictions regarding a coming storm in your area. 5.
A. Science has given us the answer.
B. There is no definite answer to the question.
C. Weather reports sometimes cannot be trusted.
D. British sailors coined the phrase in the late l600s.
E. As the air declines, it becomes warm and dry, which is stable.
F. The Weather Network has a tip for working out how far away a storm is.
G. That's the most reliable way to predict the next display of nature's temper.
Benefits and Problems of Genetic Engineering
Plant breeding is the science of changing the characteristics of plants in order to produce desired ones. Genes in a plant are what determine what type of characteristics it will have. Plant breeders try to create a specific outcome of plants and potentially new plant varieties by changing the genes of the plants through breeding, which is making new plants from parents of different varieties or species.
Actually, plant breeding has been practiced for thousands of years, since near the beginning of human civilization. It is practiced worldwide by individuals such as gardeners and farmers and by professional plant breeders employed by organizations such as government institutions, universities, crop-specific industry associations or research centers. They have crossbred plants to create the new types of plants that are, for example, bigger, stronger, or more attractive.
Crossbreeding can take such a long time, however, and it is inaccurate. Now, we can change exact sections of Deoxyribonucleic acid (DNA), so the process is more accurate and faster. But people all over the world are arguing about its benefits and disadvantages. Some people use the technology to produce desired characteristics of plants and animals. Other people are concerned that the genetically engineered plants may harm the environment and worried that they may be dangerous for people to eat.
There are many reasons for changing plants in this way. International development agencies believe that breeding new crops is important for ensuring food security by developing new varieties that are higher yielding(高产的), disease resistant, drought tolerant or regionally adapted to different environments and growing conditions. For example, some genetically engineered plants can live through frost or draught. As a result, famers can make more profit because fewer plants will die.
Some genetically engineered plants are more nutritious. They have less fat, taste better or stay fresher than non-genetically engineered plants. This will allow people to buy better-quality fruit and vegetables.
Some genetically engineered plants can resist natural pests such as viruses or insects. This reduces the amount of chemical needed to kill pests, which is helpful to the environment.
However, genetically engineered plants can cause unexpected problems. Genetically engineered plants that resist pests may pass on that characteristic to a wild relative. This may cause the wild plant to spread fast, because pests are not naturally killing it.
Genetically engineered plants can also harm animals. A type of corn has been developed which kills a species of insect that destroys it. The pollen (花粉) from this corn, however, can also kill monarch butterflies—the most beautiful of all butterflies, which do not harm the corn.
To ensure the most adapted varieties are identified, advocates of organic breeding now promote the use of direct selection for many desired characteristics.
Genetic engineering is a very new science and we have a lot to learn about the good it can do and the damage it can cause. The main concern is that not enough tests are being done to ensure it is safe.
1.According to the passage, the purpose of plant breeding is to _______.
A.beautify the environment B.change the genes of plants
C.produce new plant varieties D.assess the value of the practice
2.The author thinks crossbreeding inaccurate because _______.
A.the sections of DNA are changed
B.problems are sometimes caused
C.manpower and resources are wasted
D.animals are produced using the technology
3.The author’s attitude toward crossbreeding is _______.
A.doubtful B.disapproving
C.objective D.supportive
4.Which of the following best shows the structure of the passage?
Sp：Sub-point （次要点） C：Conclusion
I：Introduction Cp：Central Point P：Point
A.
B.
C.
D.
Learning, Fast and Deep
Over the past five years researchers in artificial intelligence have become the rock stars of the technology world. A branch of AI known as deep learning, which uses neural(神经的) networks to scan through large volumes of data looking for patterns, has proven so useful that skilled practitioners can command high six-figure salaries to build software for Amazon, Apple, Facebook and Google.
The standard route into these jobs has been a PhD in computer science from one of America’s top universities. Earning one takes years and requires a personality suited to academia, which is rare among more normal folk.
That is changing.
Last month fast.ai, a non-profit education organization based in San Francisco, kicked off the third year of its course in deep learning. Since its foundation it has attracted more than 100,000 students around the globe from India to Nigeria. The course and others like it, come with a simple idea: there is no need to spend years obtaining a PhD in order to practise deep learning. Creating software that learns can be taught as a craft, not as a high intellectual pursuit to be undertaken only in an ivory tower. Fast.ai’s course can be completed in just seven weeks.
To make it accessible to anyone who wants to learn how to build AI software is the aim of Jeremy Howard, who founded fast.ai with Rachel Thomas, a mathematician. He says school mathematics is sufficient. “No. Greek. Letters,” Mr. Howard intones, pounding the table with his fist for punctuation.
Some experts worry that this will serve only to create a flood of unreliable AI systems which will be useless at best and dangerous at worst. In the earliest days of the Internet, only a select few nerds, namely computerholics with specific skills, could build applications. Not many people used them. Then the invention of the World Wide Web led to an explosion of web pages, both good and bad. But it was only by opening up to all that the Internet gave birth to online shopping, instant global communications and search. If Mr. Howard and others have their way, making the development of AI software easier will bring forth a new crop of fruit of a different kind.
1.What can we learn about deep learning?
A.It replaces artificial intelligence.
B.It attracts rock stars to practice.
C.It scans patterns for large companies.
D.It helps technicians to create software.
2.Fast.ai is an organization that __________________.
A.ensures one to obtain a PhD B.teaches craft in ivory tower
C.offers a course in deep learning D.requires weeks to apply
3.The underlined words “No. Greek. Letters”in Paragraph 5 means doing fast.ai course is _______.
A.easy B.difficult
C.interesting D.boring
4.It can be inferred from the last paragraph that _______.
A.it is quite reliable for anyone to grasp artificial intelligence
B.the Internet has brought forth a flood of useless AI systems
C.opening up to all leads to instant global search and online shopping
D.simplifying software development may result in unexpected outcomes
