Passage 1
Researchers have found that REM (rapid eye movement) sleep is important to human beings. This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence. The deeper a person’s sleep becomes, the longer the periods of rapid eye movement. There are physical charges in the body to show that a person has changed from NREM (non-rapid eye movement) to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body is a very important characteristic of REM sleep. It is during REM sleep that a person dreams.
A.His eyes begin to move.
B.His breathing becomes faster.
C.His heart rate increases.
D.His eyes stop moving.
延伸阅读
你可能感兴趣的试题
Passage 3
If you listen to American music, watch American television or magazines, you will probably agree that the most popular subject of these forms of entertainment is love. Romantic love always finds an audience in the United States. Falling in love, solving the problems of love, and achieving the happy ending—the big wedding are subjects of interest to both the adult and the teenage public. Millions of Americans celebrate Valentine’s Day with special cards and gifts that announce their love to their mates, their friends, and their families. Popular songs tell us that “all the world loves a lover “A popular saying is “Love conquers all”. Numerous columns in magazines and newspapers offer advice to lovelorn, those with difficulties of heart. To most Americans, romantic love is central to a happy life. Not only do Americans believe in romantic love but they also believe that it is the best basis for making a happy marriage. Despite the high divorce rate in the United States, young men and women continue to marry on the basis of romantic love. Americans consider marriage a private arrangement between the two people involved. Young Americans feel free to choose their own marriage partners from any social, economic, or religious background. The man or woman may have strong ties with parents, brothers, or sisters, but when he or she falls in love, the strongest feelings are supposed to be for the loved one. When an American couple marries, they generally plan to live apart from both sets of parents and build their own independent family structure.
A.It is central to a happy life.
B.It is not the basis for marriage.
C.It is not necessarily important in people’s life.
D.Many people long for it, but it is unbelievable.
热门相关试卷
最新相关试卷