would participate in 2016 Olympic Games, an instant rivalry (竞争) match was created.

When they climbed onto the blocks before the end of the race, le Clos stared over at Phelps. However, Phelps never seemed to notice. Towards the end of the race, Phelps had a small lead coming towards the wall and in the lane next to him, le Clos was swimming with his head turned towards Phelps. Instead of focusing on his own stroke（划水）, he was still watching Phelps.

In the end, Phelps won the gold medal and le Clos got the 4th place! The world champion didn't even get a medal and I believe that it was because of how much he focused on everything but himself.

In fact, in our life, we tend to spend our time looking at, and comparing ourselves to, the lives of others. The danger is that when we are focusing on others, we don't have time to focus on making ourselves better. We don't improve our life by focusing on others. We improve when we focus on where we are at and what we can do better.

The truth is that those in the habit of comparing themselves to others will never get to a point where they are content. Even if they look around and see that they have more money, a better job, or a bigger house, there will always be somebody who has more. The constant comparison and fighting to be "the top" only leads to a lifetime of disappointment and bitterness.

28. What's the function of the first paragraph in the passage?

A. Introduction. B. Comment. C. Background. D. Explanation.

29. What is the author's attitude towards Chad le Clos?

A. Concerned. B. Suspicious. C. Regretful. D. Indifferent.

30. What do you learn about Chad le Clos?

A. He won an Olympic gold medal. B. He won a medal in the 2016 Olympics.

C. He is the best friend of Michael Phelps. D. He beat Phelps in the 200-meter freestyle.

31. Which of the following is true according to the passage?

A. Care and perseverance bring good luck. B. Concentration on yourself matters.

C. Comparison leads to success. D. Happy are those who are content.

New evidence suggests that the earliest traces of a language can stay with us into adulthood, even if we no longer speak or understand the language itself. And early exposure also seems to speed the process of relearning it later in life.

In the new study, recently published in Royal Society Open Science, Dutch adults were trained to listen for sound contrasts in Korean. Some participants reported no previous exposure to the language; others were born in Korea and adopted by Dutch