石灰在生产中的作用促进针铁矿转换赤铁矿。

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问题:

石灰在生产中的作用促进针铁矿转换赤铁矿。

考点:蒸发工考试蒸发工综合练习蒸发工综合练习题库
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用户提高功率因数只对电力系统有利,对用户无利。

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函数y=cos2x+sinxcosx的最小正周期T=(    )。

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— Is the red bat _____  ?  

— Yes,  _____ .     [ ]

A. Dave; it's                      

B. Tom's; it is        

C. Your brothers ; it does      

D. She's ; it  is

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阅读理解。

      Not long ago, people thought babies were not able to learn things until they were five or six months

old. Yet doctors in the United States say babies begin learning on their first day of life.

      Scientists note that babies are strongly influenced by their environment. They say a baby will smile

if her mother does something the baby likes. A baby learns to get the best care possible by smiling to

please her mother or other caregiver. This is how babies learn to connect and communicate with other

human

beings.

      One study shows that babies can learn before they are born. The researchers placed a tape recorder

on the stomach of a pregnant(怀孕的) woman. Then, they played a recording of a short story.  On the

day the baby was born, the researchers attempted to find if he knew the sounds of the story repeated

while in his mother. They did this by placing a device in the mouth of the newborn baby.

      The baby would hear the story if he moved his mouth one way. If the baby moved his mouth the

other way, he would hear a different story. The researchers say the baby clearly liked the story he heard

before he was born. They say the baby would move his mouth so he could hear the story again and again.

      Another study shows how mothers can strongly influence social development and language skills in

their children.

      Researchers studied the children from the age of one month to three years.The researchers attempted

to measure the sensitivity of the mothers. The women were considered sensitive if they supported their

children's activities and did not interfere(干涉) unnecessarily. They tested the children for thinking and

language development when they were three years old. Also, the researchers observed the women for

signs of depression(抑郁症).

      The children of depressed women did not do as well in tests as the children of women who did not

suffer from depression. The children of depressed women did poorly in tests of language skills and

understanding what they hear.

      These children also were less cooperative and had more problems dealing with other people. The

researchers noted that the sensitivity of the mothers was important to the intelligence (智力)development

of their children. Children did better when their mothers were caring, even when they suffered from

depression.

1.According to the passage, which of the following is NOT the factor(因素)that influences  intelligence

development in babies? 

A. The environment.      

B. Mother's sensitivity.   

C. Their peers(同龄人).                    

D.Education before birth.

2. What is the purpose of the experiment in which newborn babies heard the stories?  

A. To prove that babies can learn before they are born.

B. To prove that babies can learn on the first day they are born.

C. To show mothers can strongly influence intelligence development in their babies.

D. To indicate early education has a deep effect on the babies' language skills.

3. Which group of children did the worst in tests of language skills?  

A. The children of depressed mothers who cared little for their children.

B. The children of women who did not suffer from depression.

C. The children of depressed but caring mothers.       

D. Children with high communication abilities.

4. What is the main idea of the passage? 

A. Scientific findings about how babies develop before birth.

B. Scientific findings about how the environment has an effect on babies' intelligence.

C. A study shows babies are not able to learn things until they are born or six months old.

D. Scientific findings about how intelligence develops in babies.

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简述检查药品价格标签应从哪儿方面规范?

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