假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有1...

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。

One day, I was comfortably waiting for my flight with a good book to read1. an elderly lady was wheeled to our waiting area. I noticed the trouble she was having 2.(try) to open a packet of nuts with her shaking hands, so I offered to help. The lady was very grateful. The time came to board the plane. Realizing she needed some 3.(assist), I volunteered to carry her bag.

As I helped her get 4.(settle), I noticed her ‘seat mate’, a businessman,5.(look) a bit horrified at having to make the flight with her. He meant to change 6.(seat) with me---and I agreed. We had a long chat. As we were entering another country we needed to fill out forms. I offered to fill 7.(her) because of her shaking hands. We landed and I needed to change planes, but the wheelchair she ordered was nowhere 8. (see) so we slowly walked to the gate 9. her daughter was waiting.

As a result, I had to run to catch my connection but, as I thought about the experience, I saw her 10. my airport angel.

    Just several days ago, a violent storm hit our community. I looked out of the window and witnessed a tree being ____ by the fierce winds. The branches bent, and swayed back and forth, thanks to their ____ to avoid breaking. The leaves desperately stuck to the branches because their life ____ the tree. The powerful trunk that ____ the tree upright bent slightly backwards from the force in a battle to ____ its position.

After the storm had passed, the tree gracefully returned to its ____ position standing tall among the chaos. It managed to ____ the storm. It didn’t look the same as leaves had shed from its branches and the soil had loosened a bit, but what ____ is that the tree won the fight for its life.

For a long time I couldn’t understand why this tree ____ my attention the way it did. As time passed, it became ____ that it wasn’t just about the tree but about the roots, which, although unseen, dig deep into the soil providing ____ and nutrition. The roots allow the tree to be able to take a ____ because they are there to support them.

I couldn’t but ask myself how deep the roots are in my life. ____, the next time you catch your kids ___, when the job is driving you crazy, when you are underpaid and the ____ is tight, and when the storms of life are raging, go back to your roots. Life is full of ____. They will make you sway, make you ___, make you lose some leaves but the deeper your roots the stronger you stand.

Faced with ____ you might bend but don’t break. No matter how hard the wind blows don’t let life ___ you into an uncomfortable position. Your ____ lies in your roots.

1.A.crushed B.abused C.broken D.removed

2.A.height B.thickness C.flexibility D.outline

3.A.answered for B.depended on C.catered for D.touched on

4.A.held B.tied C.pulled D.raised

5.A.achieve B.reach C.establish D.maintain

6.A.current B.final C.original D.comfortable

7.A.explore B.avoid C.chase D.survive

8.A.counts B.differs C.concerns D.reveals

9.A.fixed B.transferred C.escaped D.caught

10.A.strange B.obvious C.possible D.reasonable

11.A.surroundings B.resources C.probability D.stability

12.A.beating B.stand C.chance D.turning

13.A.However B.Therefore C.Nevertheless D.Besides

14.A.misbehaving B.struggling C.withdrawing D.misunderstanding

15.A.security B.deadline C.money D.community

16.A.surprises B.choices C.storms D.changes

17.A.smile B.bend C.hesitate D.advance

18.A.opportunities B.challenges C.tasks D.differences

19.A.trick B.argue C.force D.admit

20.A.courage B.ambition C.value D.strength

    What color is a tennis ball? Ask your classmates, and they might give you some surprising answers.

US magazine The Atlantic recently asked 30,000 people this question. Among them, 52 percent said tennis balls are green, 42 percent said they are yellow, and 6 percent went with other colors. According to the International Tennis Federation, tennis balls are yellow. 1.

Scientists call this color constancy (色彩恒常性). For example, we know that China's flag is red. When we see it during sunset or under purple light, we still know that it is red, even if it looks like a different color. 2. Even if the object is seen in different kinds of light later, our brain can still tell its true color.

3. It appears to be a combination of yellow, a ''warm'' color and green, a ''cool'' color.

According to The Atlantic, when our brains try to figure out what color the ball is, some people ignore ''cool'' colors, such as green, blue and purple. So they see the ball as being yellow.4. They see the ball as being green.

5. In 2015, a girl posted a picture of a dress online. Some people believed the dress was black and blue—but others thought it was gold and white. They had different opinions based on whether they ignored ''cold'' or ''warm'' colors.

A.It is not just tennis balls that have such a confusing color.

B.But others ignore ''warm'' colors, such as red, yellow and orange.

C.However, the color of a tennis ball is not as pure as the flag.

D.It is difficult for some people to distinguish yellow from green.

E.So why did so many people say that they're green?

F.Certain parts of our brain are in charge of recognizing colors.

G.When we first see an object in natural light, our brains recognize its true color.

    Whether you’re eating at a fancy restaurant or dining in someone’s home, proper table manners are likely to help you make a good impression. According to a US expert, Emily Post, “All rules of table manners are made to avoid ugliness.”

While Henry Hitchings of the Los Angeles Times admits that good manners can reduce social conflict, he points out that mostly their purpose is protective — they turn our natural warrior_ like selves into more elegant ones.

So where did table manners come from?

In medieval England, a writer named Petrus Alfonsi took the lead to urge people not to speak with their mouths full. And King David I of Scotland also proposed that any of his people who learned to eat more neatly be given a tax deduction (减除).

Disappointingly, that idea never caught on. It was during the Renaissance, when there were real technical developments, opinions of correct behavior changed for good. “None of these was more significant than the introduction of the table fork,” wrote Hitchings. “Gradually, as forks became popular, they brought the new way of eating, making it possible, for instance, to consume berries without making one’s fingers dirty.”

Forks were introduced to Britain in 1608 and 25 years later, the first table fork reached America. Yet while most of the essentials (基本要素) are the same on both sides of the Atlantic, there are a few clear differences between what’s normal in the US and what holds true in the UK. For example, in the US, when food needs cutting with a knife, people generally cut a bite, then lay aside the knife and switch the fork to their right hand. Then they pick up one bite at a time. By contrast, Britons keep the fork in the left hand and don’t lay the knife down.

Though globalization has developed a new, simpler international standard of table manners, some people still stick with the American cut-and-switch method. The Los Angeles Times noted, “They are hanging on to a form of behavior that favors manners above efficiency.”

1.What does the story mainly talk about?

A.The importance of proper table manners.

B.The development of table manners in Western countries.

C.Some unwritten rules of table manners in the US and UK.

D.Differences between American and British table manners.

2.The underlined phrase “caught on” in the passage probably means ________.

A.worked in practice

B.became popular

C.drew attention

D.had a positive effect

3.Which of the following events influenced people’s table manners most according to the article?

A.The introduction of forks.

B.The tax deduction policy.

C.The rise of the Renaissance.

D.Petrus Alfonsi’s efforts in promoting table manners.

4.What can we conclude from the article?

A.British and American table manners are completely different from each other.

B.American people pay more attention to their table manners than British people do.

C.With globalization, the American cut-and-switch method has been abandoned in the US.

D.British people’s way of using a knife and fork may be more efficient than American people’s.

    An article published in the prestigious (有威望的) scientific journal Nature sheds new light on an important, but up-to-now little appreciated, aspect of human evolution. In this article Professors Dennis Bramble and Daniel Lieberman suggest that being able to run was the necessary condition for the development of our species which enabled us to come down from the trees. This challenges traditional scientific thinking, which claims that the distinctive, upright body form of modern humans has come about as a result of the ability to walk, and that running is simply a by-product of walking. Furthermore, humans have usually been regarded as poor runners compared to such animals as dogs, horses or deer. However, this is only true if we consider running at high speed, especially over short distances. But when it comes to long-distance running, humans do astonishingly well. They can keep a steady pace for many kilometres, and their overall speed is at least the same as that of horses or dogs.

Bramble and Lieberman examined 26 physical features found in humans. One of the most interesting of these is the nuchal ligament(项韧带). When we run, this ligament prevents our head from moving back and forth or from side to side. Therefore, we are able to run with steady heads held high. The nuchal ligament is not found in any other surviving primates, such as apes and monkeys. Then there are our Achilles tendons (跟腱) at the backs of our legs, which connect our calf (小腿肚) muscles to our heel bones — and which have nothing to do with walking. When we run, these tendons behave like springs, helping to push us forward. Furthermore, we have low, wide shoulders virtually disconnected from our skulls(颅骨), a physical development which allows us to run more efficiently.

But what evolutionary advantage is gained from being good long-distance runners? Perhaps it permitted early humans to obtain food more effectively. "What these features and facts appear to be telling us is that running evolved in order for our direct ancestors to compete with other meat-eating animals for access to the protein needed to grow the big brains that we enjoy today," says Lieberman. Some scientists put forward the theory that early humans chased animals for great distances in order to exhaust them before killing them.

"Research on the history of humans' ability to move has traditionally been controversial," says Lieberman. "At the very least, I believe this theory will motivate many researchers to reevaluate and further investigate how humans learned to run and walk and why we are built the way we are. "

1.In paragraph 1, what do the two professors suggest about humans' ability to run?

A.It is an evolutionary by-product of walking.

B.It helps to form people's ability to climb trees.

C.It has played an important role in human evolution.

D.It has not been adequately studied by scientists before.

2.What is true about the physical characteristics examined by the professors?

A.Achilles tendons assist people to walk long distances.

B.The human skull helps people to run more efficiently.

C.people's shoulders allow them to look from side to side.

D.The nuchal ligament enables people to hold their head steady.

3.According to paragraph 3, scientists believe that early humans_________.

A.always came across dangerous situations in life

B.ran after animals for long distances when hunting

C.often failed to find food because they couldn't run fast

D.developed their hunting skills by running long distances

4.Professor Lieberman thinks the new theory will _________.

A.completely explain how running developed

B.revolutionize the theory of human evolution

C.encourage more in-depth studies on the topic

D.be widely supported within the scientific community