This area of the brain is responsible for collecting and processing information from the outside world. This means that high-recall dreamers are more sensitive to what is happening around them. For example, when they are awake, they respond more strongly to hearing their own names. When they are sleeping, they tend to be woken up more easily by sounds and movements.

　　By closely studying people's brain activity, Ruby found that high-recall dreamers have twice as much "wakefulness time" during sleep as low-recall dreamers do.And it is during these short periods of wakefulness that the brain memorizes dreams.

　　This is not hard to understand. Just try to think of your own sleeping experience. If you are restless (焦躁的) during the night, you are more likely to remember your dreams, but if you sleep well and soundly, you tend to remember very little in the morning. This is because "you never get a chance to remember", Robert Stickgold, a Harvard Medical School researcher, told The Washington Post.

　　As another research project at the University of Turku in Finland showed, dream content can also affect our memory. Negative dreams are easier to recall than ordinary dreams. Nightmares are often recalled because they are emotionally negative, and such dreams evoke (引起) fear.

28. What can we know about high-recall dreamers, according to the article?

　　A. They have very little brain activity when they sleep.

　　B. They can remember their dreams clearly.

　　C. They don't know how to describe their dreams.

　　D. They remember their dreams twice a week.

29. Compared to high-recall dreamers, low-recall dreamers ______.

　　A. have higher quality sleep

　　B. have more sleepless nights

　　C. are more easily woken at night

　　D. respond faster when hearing their names

30. What is the main purpose of the second to last paragraph?

　　A. To explain Ruby's findings.

　　B. To attract readers' interest in future studies.

　　C. To show the advantages of being a low-recall dreamer.

　　D. To suggest what to do to become a low-recall dreamer.

31. What did the research project in Finland find?

　　A. Ordinary dreams can help our brain rest.

　　B. Dreams are often affected by our emotions.

　　C. Nightmares often happen when we don't sleep well.

　　D. Negative dreams are more likely to be recalled.

　　D

　　Preparing to go to Chinese university is exhausting enough. But when studying abroad, you need to worry about things like new tests, essays, recommendations, college choices and visa applications.

　　The first thing you should do after picking the country you want to study in is to make a list of universities, including a dream school (a school you may not get into, but is at the top of your list), a safety school (a school you can definitely get into), and several schools in between. Look at the websites of those universities and you will get a complete list of everything you need for your applications.

　　The most important element in any application will be your standardized test scores, so pick a time as early as possible to take an exam prep course.

If you are in a lecture hall with a teacher telling jokes, you are probably just