问题
选择题
下列物质中，属于纯净物的是 [ ]
A．从空气中分离得到的稀有气体
B．经过沉淀、过滤得到的矿泉水
C．加热高锰酸钾完全反应后留下的固体
D．部分结冰的蒸馏水
答案
答案：D
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下列物质中，属于纯净物的是 [ ]
A．从空气中分离得到的稀有气体
B．经过沉淀、过滤得到的矿泉水
C．加热高锰酸钾完全反应后留下的固体
D．部分结冰的蒸馏水
答案：D
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| The boy in the picture is my new friend. 1 name is Jack. He is 2 the U.K. Now he lives in Shanghai with his mother. He is thirteen years old. He has 3 black hair, just like me. There is always (总是) a smile (微笑) on his 4 and we all love him. He is 1.76 metres tall but he doesn't 5 playing basketball. He loves table tennis, 6 Zhang Jike is his favourite player. He 7 near our school, so (所以) he often plays table tennis in the gym after school. Jack likes Chinese 8 very much. His mother often takes him to the Chinese restaurants on weekends. 9 are his favourite. He wants to 10 Beijing."Beijing is a beautiful and great city!" he says.  | ||||
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