新生儿重度硬肿的范围是 A．10%～50% B．20%～50% C．30%～50%_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

新生儿重度硬肿的范围是

A．10%～50%
B．20%～50%
C．30%～50%
D．40%～50%
E．50%以上

答案

参考答案：E

完形填空

If you are writing or studying, it makes much difference where the light comes from. People use 36 and pens every day. They have to be very careful about the 37  of the light because the light shines on their work.
Every 38 gets its light either from daylight 39 the window or from the lamps,   40  no matter what kind of light it is, the way it shines is very important to the eyes.
Take a book and sit with your 41 towards the window, and try to read. Your shadow(影子) falls all over the page and makes it 42 for your eyes as if you were in a 43 room. Now turn around and face the window. The page is in shadow again, 44 the bright light is in your eyes.Try sitting with your 45 side towards the window. This is very good for reading, but if you were writing, the shadow 46  fall across the page and trouble you 47 .There is another way – sit 48 your left side to the window. Now everything is perfect for 49   as well.
Whatever kind of light is in the room, the rule about the right way to sit is 50 the same. So you see different ways to sit make much difference in writing or studying.

填空题

一个质量为m的物体，以某一初速度冲上倾角为θ的斜面，沿斜面上滑，然后又下滑回到斜面底端。已知物体从最高点下滑到斜面底端的时间为由底端上滑到最高点时间的2倍，则物体与斜面间的动摩擦因数为___________ 。