将一质点从静止开始做匀加速直线运动的总时间分成相等的三段,按从开始到最后的顺序,

题型:选择题

问题:

将一质点从静止开始做匀加速直线运动的总时间分成相等的三段,按从开始到最后的顺序,则质点经过这三段时间内的平均速度之比是(  )

A.1:3:5

B.1:4:9

C.1:

2
3

D.1:(

2+1):(
3
+
2

考点:平均速度和瞬时速度的区别
题型:选择题
As we know, weather and climate can affect people in a number of ways.
Farming and climate   Farming is directly linked (联系) to weather and climate. For example, wheat needs dry, warm and sunny weather to grow while rice needs wet, hot and rainy weather. Farmers have to decide what to grow according to the weather in their area. When there is a sudden change in the climate, it will affect farming and food production around the world.
Climate and people’s health   A change in weather will also cause changes in food, air and water qualities. So it will have a deep effect on people in the future. Changes in weather and climate can cause infectious (传染的) illnesses to spread among people because germs (细菌) can be easily spread through air and water. 
Climate and water resources   A climate change would influence the water system across the world. For example, in North America there is so much rain that towns and cities are often flooded. However, in North Africa, people can die of thirst because of being short of water.
In recent years, as a result of global warming (全球变暖), we suffer a lot from extreme (极端的) weather each year and it is the duty of the whole world to control the climate change and save our own planet – the earth.
Weather and climate   小题1: people in at least three ways
 小题2:and climate
◆ Different crops need different kinds of weather and climate.
◆ What to grow should be   小题3: according to the weather in this area.
◆ Food production may be affected   小题4: of a sudden change in the climate.
Climate and people’s   小题5:
◆ A change in weather may lead to changes in food, air and water qualities, so its effect on people is   小题6:.
◆ Climate change can make it easier for germs to   小题7: through air and water.
Climate and water resources
◆ Climate change may influence the water   小题8: in the world.
◆ In one area, there might be too much water while in another area, there might be not   小题9: water.
Conclusion
  小题10: the climate change to save the earth is the whole world’s duty.
 
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《素问·五藏别论》认为,“心肺有病”可以出现的症状是()

A.心烦喘满

B.心悸而喘

C.鼻为之不利

D.胸痛彻背

E.食少纳呆

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中华人民共和国都有接受国防教育的权利和义务。

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中央政府制定一系列鼓励发展环保产业,限制发展损害生态的政策属于( )。

A.产业政策
B.技术政策
C.税收政策
D.收费政策

题型:选择题

当前,思想舆论领域大致有哪“三个地带”?

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