问题
填空题
请填上你所知道的“化学之最”：
(1)人体中含量最多的物质是____
(2)空气中含量最多的气体是____.
(3)化学变化中的最小微粒是____.
(4)地壳中含量最多的金属元素是____(填元素符号)
答案
(1)水
(2)氮气
(3)原子
(4)Al
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请填上你所知道的“化学之最”：
(1)人体中含量最多的物质是____
(2)空气中含量最多的气体是____.
(3)化学变化中的最小微粒是____.
(4)地壳中含量最多的金属元素是____(填元素符号)
(1)水
(2)氮气
(3)原子
(4)Al
| 完形填空。 | ||||
| I am going to have a party tomorrow night. I promised my mother that she needn't do _1_ for me. My friend Jane is coming, too. She would like to help me, _2_ she can't. Because she has a piano lesson in the morning and in the afternoon she has to babysit her sister. So I will do everything by myself. I try to make _3_ party a nice one. I sent invitation to my friends _4_. Now I am thinking about what I need to do tomorrow. Yes! I have to clean the room and do some shopping. I am going _5_ some food, drinks and some fruit in the supermarket. I am going to make a shopping list _6_ I go. I also have to decorate (装饰) the room. I need to do so many things, so I _7_ see the movie "Da Vinci Code" after lunch. A terrible thing! The party begins _8_ 8 pm, so I must have dinner _9_. I am tired after I finish _10_ so many things and after dinner I can have a short rest. | ||||
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