质量相同的营养物质中,氧化分解释放能量最多的是( )。 A.无机盐 B.糖类 C

题型:选择题

问题:

质量相同的营养物质中,氧化分解释放能量最多的是(   )。

A.无机盐

B.糖类

C.脂肪

D.蛋白质

考点:食物中的营养物质
题型:选择题

大肠湿热证可见

A.大便臭秽,夹有不消化食物
B.大便稀溏,臭气少
C.泄泻如水,小便不利
D.黎明前腹泻
E.里急后重,下利脓血

题型:选择题

当租赁物出现故障时,维修人应该为()。

A.承租人

B.出租人

C.产品的生产商

D.协议解决

题型:选择题

A Charlotte, N.C., man was charged with first-degree murder of a 79-year-old woman whom police said he scared to death. In an attempt to evade policemen after a bank robbery, the Associated Press reports that 20-year-old Larry Whitfield broke into the home of Mary Parnell. Police say he didn’t touch Parnell but that she died after suffering a heart attack that was caused by terror. Can the guy be held responsible for the woman’s death? Prosecutors(公诉人) said that he can under the state’s murder rule, which allows someone to be charged with murder if he or she causes another person’s death while committing or fleeing from a severe crime like robbery—even if he or she doesn’t kill someone on purpose.

But, medically speaking, can someone actually be frightened to death? We asked Martin Samuels, chairman of the neurology department at Brigham and Women’s Hospital in Boston.

Absolutely, no question about it.

The body has a natural protective method called the fight-or-flight response(战或逃反应), which was originally described by Walter Cannon,the chairman of Harvard University’s physiology department from 1906 to 1942. If, in the wild, an animal is faced with a life-threatening situation, the autonomic nervous system responds by increasing heart rate, increasing blood flow to the muscles, and slowing digestion, among other things. All of this increases the chances of succeeding in a fight or running away from an aggressive beast. This process certainly would be of help to primitive humans. However, in the modern world there is obvious decline of the fight-or-flight response.

The autonomic nervous system uses the chemical messenger to send signals to various parts of the body to activate the fight-or-flight response. This chemical is toxic in large amounts; it damages the organs such as the heart, lungs, liver and kidneys. It is believed that almost all sudden deaths are caused by damage to the heart. There is almost no other organ that would fail so fast as to cause sudden death. Kidney failure, liver failure, those things don’t kill you suddenly.

By the way, any strong positive or negative emotions such as happiness or sadness can cause the same result. There are people who have died in intercourse or in religious passion. There was a case of a golfer who hit a hole in one, turned to his partner and said, “I can die now”, and then he dropped dead. For about seven days after the 9/11 terrorist attacks on the World Trade Center and Pentagon there was an increase of sudden cardiac death among New Yorkers.

小题1:Why the Charlotte, N.C., man was charged?

A. Because he threatened the policemen to kill an old woman.

B. Because he caused an old woman’s terror and she died.

C. Because he beat an old woman and caused her heart attack

D. Because he murdered an old woman while robbing a bank.

小题2: What is Martin Samuels’ attitude to the possibility of being frightened to death?

A.Approval.

B.Disapproval.

C.Doubtful.

D.Indifferent.小题3:Which of the following about the fight-or-flight response is true?

A. The fight-or-flight response was raised and proved by Martin A. Samuels.

B. It is a natural protective method that can’t be found in all creatures but humans.

C. The ancient humans had a superior fight-or-flight response than modern ones.

D. The fight-or-flight response is beneficial to both our actions and organs.

小题4: What activity can we infer is less likely to damage the organs?

A.Winning a big lottery.

B.Missing a dead family.

C.Watching a horror movie.

D.Listening to a sweet song.小题5:The purpose of the passage is_________.

A.to explain why people will die of a heart attack

B.to offer some advice on protecting us from heart failure

C.to compare different kinds of feelings to cause a death

D.to show strong emotions can cause a sudden death

题型:选择题

我某企业向新加坡A公司出售一批货物,出口总价为10万美元CIF新加坡,其中从大连港运至新加坡的海运运费为4000万美元,保险按CIF总价的110%投保一切险,保险费率1%。这批货物的出口总成本为72万人民币元。结汇时,银行外汇买入价为1美折合人民币8.30元。试计算这笔交易的换汇成本和盈亏额。

题型:选择题

衣服洗净后,干衣的最节能方法是()。

A.用洗衣机快速甩干

B.用电熨斗烫干

C.自然晾干

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