2.能表示阿伏加德罗常数数值的是 ( )
A.1 mol 金属钠含有的电子数
B.标准状况下,22.4 L 苯所含的分子数
C.0.012 kg 12C所含的原子数
D.1 L 1 mol·L-1硫酸溶液所含的H+数
1.下列说法正确的是 ( )
A.物质的量就是一定体积的物质的质量
B.阿伏加德罗常数就是6.02×1023
C.钠的摩尔质量等于它的相对原子质量
D.在标准状况下,1 mol 任何气体的体积都约为22.4 L
第一节:短文改错(共10小题;每小题1分,共10分)
以下标有题号的每一行均有一个错误,请找出,并按下列情况改正:
此行多一词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
此行缺一词:在缺词处加一个漏字符号(^),在该行右边横线上写出该加的词。
此行错一词:在错词的下面划一横线,在该行右边横线上写出改正后的词。
At a Friday night, a poor young artist stood at the gate of the 76._____
subway station and played his violin with large piece of paper on 77._____
the ground.Before long , he was surrounding with people, who 78._____
were all attracted by the word on that paper. It said,“ last night, 79______
a gentleman put an important thing into my hat by mistaken. Please 80._____
come to claim it soon.” Seeing this , people wondered why it could 81.____
be. After about half an hour, a man came and brought 82______
back his lottery(彩票)
which won a reward of $500,000. Later someone asked the violinist: 83._____
“ Why don’t you take the lottery ticket for yourself? ”He said, 84._____
“While I don’t have much money, I live happily. However , I lose 85._____
honesty, I won’t be happy forever.”
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