一块质量为100g的冰块熔化成水后，它的质量、体积和密度的说法中正确的是（ ）
A．质量不变、体积变大、密度变小
B．质量不变、体积变小、密度变大
C．质量不变、体积不变、密度不变
D．质量变小、体积不变、密度变小
质量为100g的冰块熔化成水后，只是状态发生了变化，水的多少没有变，故质量不变．但冰的密度比水的密度小．所冰变成水后，体积变小了．
故选B．
| Cloze test. 完形填空。 |
| Miss Zhao is one of the most popular teachers in the school. Yesterday she came into the 1 with a big smile on her face. She said to her 2 that she was 3 to see they did well in the sports meeting. But 4 was not pleased to see the classroom last Saturday not as 5 as usual. She hoped they would clean the classroom every day. Wei Hua was on 6 yesterday. She 7 everyone was at school except Lin Tao. Then she told Miss Zhao about their 8 to the Great Wall last Sunday. Luckily the weather was 9 . They played games and had a picnic there. After Wei Hua 10 her talk, Miss Zhao began her lesson. |
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