某物质在空气中燃烧后，生成了二氧化碳、一氧化碳、二氧化硫，则这种物质中一定含有 ______元素，可能含有 ______元素．
生成物二氧化碳、一氧化碳、二氧化硫中含有C，S，O元素，则反应物中也一定含有这三种元素．物质在空气中燃烧是和空气中的氧气反应，氧气由O元素组成，则C，S一定是从某物质中来，而某物质中也可能含有O元素．
故答案为：C，S O
完形填空。
Thomas Edison wore 1 caps during his life, 2 thinking caps, the caps of many famous
schools and colleges. But the most important cap was his thinking cap. It had saved his mother's 3 .
One day when he was a boy his mother fell ill. The doctor wanted 4 her an operation (手术). But
the light in the room was not bright. Edison quickly 5 his thinking cap and he found a way 6 his
mother. Edison was good at 7 his hands and his head. He was the most interested 8 electricity.
We can see his 9 everywhere because they are very common. They were 10 by Edison's thinking
cap.
| ( )1. A. much | |
| ( )2. A. as | |
| ( )3. A. living | |
| ( )4. A. give | |
| ( )5. A. take off | |
| ( )6. A. save | |
| ( )7. A. use | |
| ( )8. A. at | |
| ( )9. A. inventors | |
| ( )10. A. inventing | B. many |
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B. life
B. to give
B. put off
B. to save
B. make
B. of
B. invent
B. invented
C. such as
C. lives
C. to gave
C. put down
C. saving
C. using
C. in
C. invents
C. made
D. was like
D. alive
D. give
D. put on
D. saved
D. making
D. on
D. inventions
D. making