有关一般系统论的描述，不正确的是（） A.系统是具有整体功能和综合行为的统一体 B.

I was addressing and stamping envelops (信封) when I found there were no stamps left. "I have some in here," my daughter said as she reached for her Bible (圣经).
"It just shows that if you need help, turn to the Bible." I said.
"I also keep my household money (家用钱) in here," she replied. "It’s a good place to hide things. The ones who do open the Bible wouldn’t steal from it, and the ones who would steal never open it.\

The mother had enough stamps.

A. Right.


B. Wrong.

C. Doesn’t say.

围绕“建国以来党的‘左’倾错误及其表现”这一研究主题，某研究性学习小组搜集了如下素材。其中不宜采用的是

A
B
C
D

A．AB．BC．CD．D

(1)下列说法中正确的有        。(填入正确选项前的字母)

A．第二类永动机和第一类永动机一样，都违背了能量守恒定律

B．自然界中的能量虽然是守恒的，但有的能量便于利用，有的不便于利用，故要节约能源

C．若气体的温度随时间不断升高，其压强也一定不断增大

D．晶体都具有固定的熔点

伪造会计凭证，是指用涂改、挖补等手段来改变会计凭证的真实内容，歪曲事实真相的行为。( )