问题
选择题
标准状况下，m g A气体与ngB气体分子数 相等，下列说法不正确的是[ ]
A．标准状况下，同体积的气体A和气体B的质量比为m:n
B．25℃时，1 kg气体A与1 kg气体B的分子数之比为n:m
C．同温同压下，气体A与气体B的密度之比为m:n
D．标准状况下，等质量的A与B的体积比为m:n
答案
答案：D
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标准状况下，m g A气体与ngB气体分子数 相等，下列说法不正确的是[ ]
A．标准状况下，同体积的气体A和气体B的质量比为m:n
B．25℃时，1 kg气体A与1 kg气体B的分子数之比为n:m
C．同温同压下，气体A与气体B的密度之比为m:n
D．标准状况下，等质量的A与B的体积比为m:n
答案：D
| 完形填空。 |
| Once a king had a great highway built for the members of his kingdom. After it was completed but before it was 1 to the public, the king decided to have a (n) 2 . He invited as many people as he could to take part in it so that he could see who could travel the 3 the best. On the day of the competition, the people came. Some of them had fine clothing or great food. They travelled the highway all day, but each one, when arriving at the end, looked rather 4 and complained to the king that there was a large pile of 5 on the road at one spot (地点) and that this got in their way. At the end of the day, a traveller crossed the finish line and walked over to the king. He was 6 and dirty, but he showed great respect to the king and handed him a bag of gold. He explained that he stopped along the way to clear (清理) a pile of rocks and found that bag of gold under it all. He hoped that the king could help him to 7 it to its owner. The king replied, "You are the rightful owner. This is the 8 for the winner. You travels the road 9 because you clear the road for those who will 10 ." |
| ( )1. A. opened ( )2. A. game ( )3. A. kingdom ( )4. A. happy ( )5. A. rocks ( )6. A. surprised ( )7. A. hand ( )8. A. pay ( )9. A. best ( )10. A. go | B. used B. match B. highway B. excited B. gold B. tired B. take B. money B. fastest B. move | C. closed C. competition C. way C. angry C. clothing C. lonely C. return C. prize C. most slowly C. run | D. sent D. race D. line D. sad D. bags D. worried D. collect D. coin D. truly D. follow |