搜题请搜索小程序“爱下问搜题”
问题 选择题

下列关于北魏均田制的说法不正确的是

①政府把地主多占的土地分配给农民

②均田制确定了受田农民对土地的完全所有权

③均田制使农民获得了一定的土地，促进了社会经济的发展

④均田制限制了官僚地主对土地的占有

⑤均田制解决了土地兼并问题[ ]

A．①②③④⑤

B．①②③④

C．①②④⑤

D．①②

答案

答案：D

多项选择题

2009年我国就业工作的重中之重是（）

A．复原转业军人安置就业工作

B．高校毕业生就业工作

C．困难就业群体就业工作

D．农民工就业工作
查看答案
单项选择题

When you first drift off into slumber, your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing will become quite regular. Your brain waves slow down a bit, with the alpha rhythm predominating for the first few minutes. This is the first stage of sleep. For the next 30 minutes or so, you will drift down through Stage 2 and Stage 3. The lower your stage of sleep, the slower your brain waves will be. About 40-60 minutes after you lose consciousness, you will reach the last stage. Your brain waves will show the delta rhythm. You may think that you stay at this deep stage all the rest of the night, but that turns out not to be the case. About 80 minutes after you fall into slumber, your activity cycle will increase slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids. This period of Rapid Eye Movements lasts for 8-15 minutes and is called REM sleep.
During both light and deep sleep, the muscles in your body are relaxed but capable of movement. As you slip into REM sleep, a very odd thing occurs -- most of the voluntary muscles in your body become paralyzed. Although your brain shows very rapid bursts of neural activity during REM sleep, your body is incapable of moving. REM sleep is accompanied by extensive muscular inhibition.

On the part of an average sleeper, there______of sleep in cycles.

A．is one stage

B．are two stages

C．are six stages

D．are four stages
查看答案