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【单选题】
—Can you sing? —_____ [ ]A.
Yes, I do
B.
No, you can't
C.
Yes, I can
D.
Yes, I am
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举一反三
【单选题】下列关于阿伏加德罗常数的说法不正确的是（ ）
A.
6.02×10 23 就是阿伏加德罗常数
B.
0.012kg 12 C含有的碳原子数就是阿伏加德罗常数
C.
含有阿伏加德罗常数个粒子的物质的量是1mol
D.
1molNH 3 所含原子数约是2.408×10 24
【简答题】I’m afraid your requirement of commission is difficult for us to accept. Let’s [填空(1)] each other half way. Mutual efforts will carry us a step forward.A. meet
【简答题】I’m afraid your requirement of commission is difficult for us to accept. Let’s [填空(1)] each other half way. Mutual efforts will carry us a step forward.A.
【简答题】17，10，9，6，1，2，（ ）。
【简答题】I’m afraid your requirement of commission is difficult for us to accept. Let’s [填空(1)] each other half way. Mutual efforts will carry us a step forward.A. meet
【单选题】下列关于阿伏加德罗常数的说法不正确的是( )
A.
0.012 kg 12 C含有的碳原子数就是阿伏加德罗常数
B.
6.02×10 23 就是阿伏加德罗常数
C.
含有阿伏加德罗常数个粒子的物质的量是1 mol
D.
1 mol NH 3 所含原子数约是2.408×10 24
【简答题】Thanks ___ mutual efforts, we were able to bridge the price gap and put the deal through.
【单选题】下列说法错误的是（ ）
A.
6.02×10 23 是阿伏加德罗常数的近似值
B.
阿伏加德常数个微粒的物质的量是1mol
C.
1mol碳-12原子的质量为12g
D.
硫酸的摩尔质量是98克
【单选题】___ mutual efforts, we were able to bridge the price gap and put the deal through.
A.
Thanks to
B.
Owings to
C.
Because
D.
As
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