天然水中含有的部分杂质如下表所示: 请根据上表内容回答: (1)写出“主要气体”

题型:填空题

问题:

天然水中含有的部分杂质如下表所示:

请根据上表内容回答:

(1)写出“主要气体”中两种气体的化学式_______、________。

(2)写出“主要离子”中一种阳离子和一种阴离子的符号_______、___________;

(3)写出由“生物生成物”中的离子组成的磷酸二氢铵的化学式________________。

考点:二氧化碳的性质氧气的性质离子符号的意义及写法化学式的写法和意义
题型:填空题
下列运算错误的是(  )
A.
16
=4
B.100
1
2
=
10
C.
3-27
=-3
D.
(-2)2
=2
题型:填空题

已知某省会城市暴雨强度P=5年时,q5=354L/(s·hm2);P=10年时,q5=300L/(s·hm2)。该市中省政府办公楼屋面水平投影面积为2000m2,则该办公楼设计雨水流量为______L/s。

A.24
B.56
C.54
D.79

题型:填空题

圆柱形,根头部略膨大,可见轮状排列的叶柄残基和密集的疣状突起的中药材是()

A.当归

B.防风

C.秦艽

D.牛膝

E.板蓝根

题型:填空题

男,32岁,体重超过标准体重35%,父母及兄弟姐妹无肥胖史,无用激素类药物史,甲状腺功能正常,这种肥胖最可能的原因是()

A.摄入蛋白质过多

B.运动量小

C.摄入总热能大于总热能的消耗

D.碳水化合物摄入过多

E.脂肪摄入过多

题型:填空题

Shane Thomas is a 10-year-old pianist from England. He’s being called the next Mozart because of his amazing abilities.

He has only been having piano lessons for four months, and practices four hours a week, but he has already played difficult classical pieces. He was just seven when he sat down at the piano, and could play at once. He also says he never gets nervous.

When Shane was three years old, he said that he could play the piano, but nobody took him seriously. At school, he could listen to the teacher and do his work while composing (作曲) in his head. Shame remembers all the melodies(旋律),and when he gets home he plays them on the piano, while his father records them. Shane loves playing the piano, and when he grows up he wants to be a composer.

His tutor, Richard Goffin-Lecar, says he is like Amadeus Mozart, who lived during the 18th century in Salzburg, Austria, and was one of the most famous composers ever. Mr. Goffin-lecar says, “I don’t teach Shane very much. I just give him directions, then sit back and watch.”

His father, a single parent with two other children, says that although he has little money, he wants to send Shane to a good music school. “I’m a single father, but I have this gifted child. I don’t have much money, but I want to give him the best teachers, and also take him into a studio to record.”

56. When did Shane tell others that he could play the piano?

A. At age three.                   B. At age ten.  C. At age seven.       D. At age four.

57. Which of the following is TRUE about Shane?

A. He feels nervous while playing the piano    

B. He can compose in his head while doing his work.       

C. He wants to be a piano tutor when he grows up.        

D. He doesn’t like to listen to the teacher at school.

58. What do we learn about Shane’s father?

A. He also plays the piano well.

B. He’s a single father with two children.

C. He believes in Shane’s talent for music and will support him.

D. Not having enough money, he will ask the teachers for help

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