问题
选择题
氧气是一种化学性质比较活泼的气体，能与许多物质发生化学反应．下列叙述中正确的是（ ）
A．铁丝在氧气中燃烧生成氧化铁
B．硫粉在氧气中燃烧生成三氧化硫
C．镁带在氧气中燃烧生成二氧化镁
D．氢气在氧气中燃烧生成水
答案
答案：D
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氧气是一种化学性质比较活泼的气体，能与许多物质发生化学反应．下列叙述中正确的是（ ）
A．铁丝在氧气中燃烧生成氧化铁
B．硫粉在氧气中燃烧生成三氧化硫
C．镁带在氧气中燃烧生成二氧化镁
D．氢气在氧气中燃烧生成水
答案：D
Directions: Complete the passage below with the correct forms of the given words and phrases in the column (two are extra).
His sister Kelly recalled that standing inside were lots of strange 小题4:.___________with white skin and large black eyes. She was frightened. But his mother 小题5:._________ Kelly was having a dream and sent her to bed. Police have 小题6:._________the possibility that Justin was taken by aliens, but are also looking into other possibilities. Detective Sam Peterson, who has taken charge of the case, thought that people sometimes 小题7:.__________amazing stories, and there might be other possibilities such as murder. There is really no hard evidence that aliens took him away. They wouldn’t give up until they found 小题8:.____________ evidence. |
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| In the depths of my memory, many things I did with my father still live. These things have come to represent, in fact, what I call 1 and love. I don't remember my father ever getting into a swimming pool  . But he did 2 the water. Any kindof 3 ride seemed to give pleasure. 4 he loved to fish; sometimes he took me along. But I never really liked being on the water the way my father did. I liked being 5 the water, moving through it, 6 it all around me. I was not a strong 7 , or one who learned to swim early, for I had my 8  . but I loved being in the swimming pool close to my father's office and 9 those summer days with my father, who 10 come by on a break. I needed him to see what I could do. My father would stand there in his suit, the 11 person not in swimsuit. After swimming, I would go 12 his office and sit on the wooden chair in front of his big desk, where he let me 13 anything I found in his top desk drawer. Sometimes, if I was left alone at his desk 14 he worked in the lab, an assistant or a student might come in and tell me perhaps I shouldn't be playing with his 15 . but my father always 16 and said easily, "Oh, no, it's 17 ." Sometimes he handed me coins and told me to get 18 an ice cream… | ||||
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