问题 单项选择题

上海的小朋友通常上学都比乌鲁木齐的小朋友要早,这是由于()

A.地球自转造成两地地方时的差异

B.上海小朋友比乌鲁木齐小朋友勤奋

C.地球公转造成两地季节差异

答案

参考答案:A

解析:

D.两地气候不同

分析:地球自转的方向为自西向东,周期为一天,产生的地理现象是昼夜交替、时间差异,以及沿地表水平运动的物体发生偏向.

解答:地球是个不透明的球体,任意时刻太阳都只能照亮它的一半.由于地球不停地自转,被照亮的部分(昼半球)不断地向阴暗的部分(夜半球)转化,这就是昼夜交替.由于地球的自转运动,相同纬度的地区东边的地点早一刻看到日出,这样不同经度的地方时间的早晚出现了差别,即时间差异.因此上海的小朋友通常上学都比乌鲁木齐的小朋友要早.

点评:本题考查地球自转产生的现象,理解解答即可.

单项选择题

C

A scientist working at her lab bench and a six-old baby playing with his food might seem to have little in common.After all,the scientist is engaged in serious research to uncover the very nature of the physical world,and the baby is,well, just playing…right?Perhaps,but some developmental psychologists()have argued that this“play”is  more like a scientific investigation than one might think.

Take a closer look at the baby playing at the table.Each time the bowl of rice is pushed over the table edge,it

falls in the ground---and, in the process, it belongs out important evidence about how physical objects interact ; bowls of rice do not flood in mid-sit, but require support to remain stable. It is likely that babies are not born knowing the basic fact of the universe; nor are they ever clearly taught it. Instead, babies may form an understanding of object support through repeated experiments and then build on this knowledge to learn even more about how objects interact. Though their ranges and tools differ, the baby’s investigation and the scientist’s experiment appear to share the same aim(to learn about the natural world ), overall approach (gathering direct evidence from the world), and logic (are my observations what I expected?).

Some psychologists suggest that young children learn about more than just the physical world in this way---that they investigate human psychology and the rules of language  using similar means. For example, it may only be through repeated experiments, evidence gathering, and finally overturning a theory, that a baby will come to accept the idea that other people can have different views and desires from what he or she has, for example, unlike the child , Mommy actually doesn’t like Dove chocolate.

Viewing childhood development as a scientific investigation throws on how children learn ,but it also offers an inspiring look at science and scientists. Why do young children and scientists seem to be so much alike? Psychologists have suggested that science as an effort ---the desire to explore, explain, and understand our world---is simply something that comes from our babyhood. Perhaps evolution provided human babies with curiosity and a natural drive to explain their worlds, and adult scientists simply make use of the same drive that served them as children. The same cognitive systems that make young children feel good about feel good about figuring something out may have been adopted by adult scientists. As some psychologists put it, ”It is not that children are little scientists but that scientists are big children.”

What is themain idea of the last paragraph?()

A. The world may be more clearly explained through children’s play.

B. Studying babies’ play may lead to a better understanding of science.

C. Children may have greater ability to figure out things than scientists.

D. One’s drive for scientific research may become per as he grows.

单项选择题 B型题