A healthy, active lifestyle. helps to improve and maintain mental health. Which one of the following is an example of an improvement in mental health？（)

A、 accident B、defect C、damage D、defeat

A、T B、F

A．stay B．preserve C．maintain D．reserve

A．Eating as little as possible. B．Eating no breakfast. C．Eating three regular meals a day. D．Eating no lunch.

A．onStart B．setResult C．startActivityForResult D．onRestart

A taken on B brought on C depended on D relied on

The【C2】______a meal is cooked and served is most important and an【C3】______served meal will often improve a child's appetite. Never ask a child【C4】______he likes or dislikes a food and never【C5】______likes and dislikes in front of him or allow【C6】______else to do so. If the father says he hates fat meat or the mother【C7】______vegetables in the child's hearing he is【C8】______to copy this procedure. Take it【C9】______granted that he likes everything and he probably【C10】______. Nothing healthful should be omitted from the meal because of a【C11】______dislike. At meal times it is a good【C12】______to give a child a small portion and let him【C13】______back for a second helping rather than give him as【C14】______as he is likely to eat all at once. Do not talk too much to the child【C15】______meal times, but let him get on with his food, and do not【C16】______him to leave the table immediately after a meal or he will【C17】______learn to swallow his food【C18】______he can hurry back to his toys. Under【C19】______circumstances must a child be coaxed(哄骗)【C20】______forced to eat. 【C1】 A．if B．until C．that D．unless

A．sustainable, substantial B．substantial, sustainable C．sustainable, substantive D．sustainable, sustainable

The future health of Americans may depend on it. Just this week, a study reported that life expectancy (预期寿命) has fallen or is no longer increasing in some parts of the United States. The situation is worst among poor people in the southern states, and especially women. Public health researchers say it is largely the result of increases in obesity (肥胖), smoking and high blood pressure. They also blame differences in health services around the country. In 2006, a study found that only four percent of elementary schools provided daily physical education all year for all grades. This was true of eight percent of middle schools and two percent of high schools. The study also found that 22 percent of all schools did not require students to take any P. E. (体育课). Charlene Burgeson is the executive director of the National Association for Sport and Physical Education. She says one problem for P. E. teachers is that schools are under pressure to put more time into academic subjects. Also, parents may agree that children need exercise in school. Yet many parents today still have bad memories of being chosen last for teams because teachers favored the good athletes in class. But experts say P. E. classes have changed. They say the goal has moved away from competition and toward personal performance, as a way tp build a lifetime of activity. These days, teachers often lead activities like weight training and yoga. Some parents like the idea of avoiding competitive sports in P.E class. Yet others surely dislike that idea. In the end, schools may find themselves in a no-win situation. Why are schools recommended to give students certain time for sports？ A．Because different schools set up different physical education programs. B．Because the physical activity of children will influence their health in adulthood. C．Because nowadays children spend too much time on their studies. D．Because only four percent of elementary schools provided daily physical education.

是 否

A．Mean circulatory filling pressure↑, Strength of cardiac contraction↑, Sympathetic nerve activity↑ B．Mean circulatory filling pressure↓, Strength of cardiac contraction↑, Sympathetic nerve activity↑ C．Mean circulatory filling pressure↓, Strength of cardiac contraction↓, Sympathetic nerve activity↑ D．Mean circulatory filling pressure↓, Strength of cardiac contraction↓, Sympathetic nerve activity↓