School children must be taught how to de

题型:选择题

问题:

School children must be taught how to deal with dangerous _________.

A.states

B.conditions

C.situations

D.positions

考点:名词可数名词及其单复数集合名词
题型:选择题

“风在吼,马在叫,黄河在咆啸.”这句歌词中的“吼、叫、咆啸”分别是_____、_____、_____振动而产生。

题型:选择题

白化病是由隐性致病基因控制的遗传病,一对肤色正常的夫妇生下了一个白化病的孩子,那么这对夫妇的基因组成分别是[ ]

A.HH和Hh

B.HH和hh

C.Hh和Hh

D.hh和hh

题型:选择题

Happiness is contagious (有感染力的), as researchers reported on Thursday.

People with the most social connections — spouses, friends, neighbors and relatives — were also the happiest, the data showed. “Each additional happy person makes you happier,” Christakis said.

“Imagine that I am connected to you and you are connected to others and others are connected to still others. It is this fabric of humanity, like an American patch quilt.”

Each person sits on a different colored patch. “Imagine that these patches are happy and unhappy patches. Your happiness depends on what is going on in the patch around you,” Christakis said.

“It is not just happy people connecting with happy people, which they do. Above and beyond, there is this contagious process going on.”

And happiness is more contagious than unhappiness, they discovered.

“If a social contact is happy, it increases the likelihood that you are happy by 15 percent, ” Fowler said. “A friend of a friend, or the friend of a spouse or a sibling (兄弟姐妹), if they are happy, increases your chances by 10 percent,” he added.

A happy third degree friend — the friend of a friend of a friend — increases a person’s chances of being happy by 6 percent.

“But every extra unhappy friend increases the likelihood that you’ll be unhappy by 7 percent,” Fowler said.

The finding is interesting and it is useful, too, Fowler said.

“Among other benefits, happiness has been shown to have an important effect on reduced mortality (死亡率), pain reduction, and improved cardiac (心脏的) function. So better understanding of how happiness spreads can help us learn how to develop a healthier society,” he said.

The study also fits in with other data suggested in 1984 that having $ 5,000 extra increased a person’s chances of becoming happier by about 2 percent.

“A happy friend is worth about $ 20,000,” Christakis said.

小题1:It can be inferred that________.

A.happiness spreads as fast and widely as unhappiness

B.unhappiness spreads faster and more widely than happiness

C.happiness spreads faster and more widely than unhappiness

D.the spread of unhappiness has not been studied by researchers小题2:Which of the following will increase your chances of becoming happier most?

A.Being in a party with a happy atmosphere.

B.A happy experience of your brother or your parents.

C.A happy trip to a foreign country of your friends.

D.Happiness of your friend’s friend.小题3:What does Christakis mean by saying “A happy friend is worth about $ 20,000”?

A.A happy friend can help you bring in a wealth of $ 20,000.

B.A happy friend is a wealth which is worth about $ 20,000.

C.A happy friend increases your chances of being happy by 2%.

D.A happy friend increases your chances of being happy by 8 %.

题型:选择题

固有分离因子是根据()来计算的。它与实际分离因子的差别用()来表示。

题型:选择题

砂率是指( )。

A.砂质量/石质量

B.砂质量/混凝土总质量

C.砂体积/石体积

D.砂体积/砂石总体积

更多题库