问题 选择题

下列说法不正确的是(  )

A.温度越高的物体内能一定越大

B.温度越高,物体的分子运动得越快

C.温度越高,液体蒸发得越快

D.温度越高,物质扩散得越快

答案

A、物体内能跟物体的温度、质量、状态有关,只有温度高低不能判断物体内能大小.说法错误,符合题意.

B、分子运动速度跟温度有关,温度越高,分子运动越快.说法正确,不符合题意.

C、蒸发快慢跟液体的温度、液体的表面积、液体表面上空气流动速度有关.液体温度越高,表面积越大,液体表面上空气流速越大,液体蒸发越快.说法正确,不符合题意.

D、扩散现象跟温度有关,温度越高,扩散越快.说法正确,不符合题意.

故选A.

阅读理解

Not long ago, many people believed that babies only wanted food and to be kept warm and dry. Some 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. The Eunice Kennedy Shriver National Institute of Child Health and Human Development is a federal government agency. Its goal is to determine which experiences can influence healthy development in people.

Researchers at the institute 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 people.

The researchers say this ability to learn exists in a baby even before birth. They say newborn babies can recognize and understand sounds they heard while they were still developing inside their mothers.

Another study has suggested that low birth weight babies with no evidence of disability may be more likely than other children to have physical and mental problems.

American researchers studied almost five hundred boys and girls. They were born in, or admitted to, one of three hospitals in New Jersey between 1984 and 1987. At birth, each child weighed fewer than two thousand grams.

The boys and girls had an average age of sixteen at the time of the study. They were asked to complete intelligence and motor skill tests in their homes. Their test results were compared with those of other children their age.

小题1:According to the passage, some people used to think that babies began to learn _________.

A.on their first day of life

B.even before they were born

C.before five or six months old

D.at or after five or six months old小题2:Babies learn to connect and communicate with other people through_____________.

A.smiles

B.cries

C.facial expressions

D.body language小题3:The Eunice Kennedy Shriver National Institute of Child Health and Human Development tries to find out ________.

A.what affects people’s healthy development

B.what influences babies’ learning ability

C.how to cure some children’s health problems

D.how to develop children’s learning ability小题4:What will be mentioned in the following passage?

A.The evaluation method of the tests.

B.The cause of low birth weight babies.

C.The result of the intelligence and motor skill tests.

D.The evidence proving babies began to learn before birth.

判断题