问题
选择题
下列关于氯的说法正确的是 [ ]
A．Cl2具有很强的氧化性，在化学反应中只能作氧化剂
B．实验室制备Cl2可用排饱和食盐水集气法收集
C．液氯、氯水均为含多种分子和离子的混合物
D．1.12 L Cl2含有1.7NA个质子（NA表示阿伏加德罗常数）
答案
答案：B
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下列关于氯的说法正确的是 [ ]
A．Cl2具有很强的氧化性，在化学反应中只能作氧化剂
B．实验室制备Cl2可用排饱和食盐水集气法收集
C．液氯、氯水均为含多种分子和离子的混合物
D．1.12 L Cl2含有1.7NA个质子（NA表示阿伏加德罗常数）
答案：B
| 阅读理解。 | ||||||||||||||||||
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1. is from Canada. | ||||||||||||||||||
[ ] | ||||||||||||||||||
| A. Bill Gates B. Mark Twain C. Thomas Edison D. Celine Dion | ||||||||||||||||||
| 2. The was born in 1835. | ||||||||||||||||||
[ ] |
| A. inventor B. singer C. doctor D. writer |
| 3. My Heart Will Go On is the name of a . |
[ ] |
| A. book B. song C. story D. films |
| 4. Dr. Bethune worked in China for about . |
[ ] |
A. 2 |
| 5. Which of the following is true? |
[ ] |
| A. Mark Twain wrote Business the Speed of Thought. B. Bill Gates started working for Microsoft Company. C. Thomas Edison made over 1,000 inventions. D. Celine Dion stopped singing in 1997. |
