某学生为了证明甲烷中含有碳、氢元素，设计并完成了如下实验方案，请你帮他完成下面的

发布时间：2017-06-12 12:52 │ 来源：www.tikuol.com

题型：实验题

问题：

某学生为了证明甲烷中含有碳、氢元素，设计并完成了如下实验方案，请你帮他完成下面的实验报告：

实验目的：证明甲烷中含有碳、氢元素

实验用品：火柴、盛有甲烷的贮气瓶、一个洁净干燥的小烧杯、澄清石灰水

实验步骤	实验现象	结论
①点燃甲烷
②将洁净干燥的小烧杯罩
在甲烷燃烧的火焰上方		证明含有_______元素
③将蘸有_______的小烧杯
罩在甲烷燃烧的火焰上方		证明含有_______元素

考点：设计实验和科学探究

题型：实验题

完形填空。

    Paul received an expensive car from his brother as a Christmas present. On Christmas Eve Paul saw a dirty
and poorly-dressed boy walking   1 his shining car. "Is this your car, Paul?" he asked.
    Paul told him how he got the car and the boy was 2 . "You mean your brother gave it to you and it didn't
cost you nothing? Boy, I wish…" he said, without   3 his sentence. Paul thought the boy wished he had a   4
like that. But what the boy said surprised Paul greatly. "I wish," the boy went on, "that I could be a brother like
that."
    Paul looked at the boy in surprise. He invited him to take a   5 in his car and the boy agreed happily. After a
short ride, the boy turned and with his eyes 6 said, "Paul, would you mind driving in front of my house?"
    Paul smiled a little. He thought the boy wanted to   7 his neighbors that he could ride home in a big car. But
Paul was wrong 8 . The boy ran back into his house, and after a short while came back with his disabled
brother in his arms.
    He   9 him down on the step and pointed to the car. "There she is, Buddy, just like what I told you upstairs.
His brother gave it to him for Christmas and it didn't 10 him a cent. Some day I'm going to give you one just
like it."

( ) 1. A. inside
( ) 2. A. interested
( ) 3. A. finishing
( ) 4. A. car
( ) 5. A. seat
( ) 6. A. watering
( ) 7. A. frustrate
( ) 8. A. either
( ) 9. A. sat
( ) 10. A. pay

B. around
B. excited
B. understanding
B. brother
B. rest
B. shining
B. shock
B. too
B. dropped
B. cost

C. through
C. satisfied
C. hearing
C. sister
C. ride
C. wondering
C. remind
C. again
C. let
C. bring

D. across
D. surprised
D. checking
D. family
D. picture
D. shaking
D. show
D. instead
D. kept
D. return

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题型：实验题

“格物、致知、诚意、正心、修身、齐家、治国、平天下”被后世称为《大学》的“八条目”，强调以自我完善为基础，通过治理家庭，直到平定天下，这种从个人到“家”再到“天下”的层次扩展的关系源头是

A．宗法制

B．分封制

C．郡县制

D．中央集权制

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题型：实验题

生产者剩余是( )。

A．卖者得到的量加上生产成本

B．生产成本减去卖者得到的量

C．买者得到的量减去生产成本

D．卖者得到的量减去生产成本

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题型：实验题

阳不胜其阴，则______，九窍______。

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题型：实验题

汽车上采煤样，应下挖深度为（）

A．0．2m；

B．0．3m；

C．0．4m；

D．0．5m

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