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问题 判断题

证券发行市场又称“一级市场”或“初级市场”，是发行人以筹集资金为目的，按照一定的法律规定和发行程序，向投资者出售新证券所形成的市场。（）

答案

参考答案：对

解析：证券发行市场是发行人以筹集资金为目的，按照一定的法律法规和发行程序向投资者出售新证券所形成的市场，又称"一级市场"或"初级市场"。

单项选择题

为促进迁移，教师在教材的呈现程序方面应（）。

A．从细节到整体

B．从一般到个别，不断分化

C．从个别到一般

D．没关系
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单项选择题

Why do airplanes take longer to fly west than east

It can take five hours to go west-east from New York(NY) to London but seven hours to travel east-west from London to NY. The reason for the difference is an atmospheric phenomenon known as the jet(喷射) stream. The jet stream is a very high altitude wind which always blows from the west to the east across the Atlantic. The planes moving at a constant air speed thus go faster in the west- east direction when they are moving with the wind than in the opposite direction.

2. What would happen if the gravity on Earth was suddenly turned off

Supposing we could magically turn off gravity. Would buildings and other structures (建筑物) float away What happened would depend on how ply the things were attached to the Earth, The Earth is moving at quite a speed, moving at over a thousand miles per hours. If you turn something around your head on a string(细绳) , it goes around in a circle until you let go of the string. Then it flies off in a straight line. ’ Switching off’ gravity would be like letting go of the string. Things not attached to the Earth would fly off in a straight line. People in buildings would suddenly shoot up-wards at a great speed until they hit the ceiling. Most things outside would fly off into space.

It can be inferred that without gravity（）.

A. buildings and other structures would float away

B. trees and buildings would not easily fly off

C. something around your head would not fly away

D. everything outside buildings would fly off into space
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