水是一种理想透明体，被用来作为其它透明物体光谱透射比测量的参照标准。

Directions: Put the following sentences in the proper o...

问答题Directions: Put the following sentences in the proper order so that they make a complete paragraph.
1.  Best friends, in a way, have the highest loyalty towards each other, because they always have each other’s back no matter what it is.
2.  From the start of a friendship, there is a little bit of loyalty to your newly acquired friend.
3.  In a way, there are levels of loyalty, the way I see it.
4.  As it does become a closer friendship, the level of trust changes a bit.
5.  You want to build a bond of trust so that friendship can become better.
6.  You are relied on more, and you start to be there for your friend. 
请把你的排序方式写在空格处！数字之间用一个空格分开。
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Other things the same, an increase in aggregate demand ...

单项选择题Other things the same, an increase in aggregate demand reduces unemployment and raises inflation in the short run.
A、正确
B、错误

可见光中，红光的波长短，紫光的波长长。

未知题型可见光中，红光的波长短，紫光的波长长。