国际辐射单位和测量委员会简称
A.ICRUB.ICRPC.ISOD.IBSSE.以上都不对
参考答案:A
阅读理解。
Accident Report Form
1. What time did Mrs. Green call the police?
A. At 9:30 p.m.
B. At 9:40 p.m.
C. At 9:45 p.m.
2. How many people were trapped in the car?
A. One.
B. Two.
C. Three.
3. Whose left leg was hurt?
A. Mrs. Green's.
B. Their daughter's.
C. Mr. Green's.
4. What was the weather like that day?
A. It was sunny.
B. It was rainy
C. It was cloudy.
5. Which of the following is TRUE?
A. The car crashed into a wall.
B. Their daughter hurt her leg and was sent to the hospital.
C. The car accident happened on Zhongshan Road in Nanjing.
下列关于该有机物的叙述正确的是( )
A.该有机物不同化学环境的氢原子有8种
B.该有机物属于芳香族化合物
C.键线式中的Et代表的基团为-CH3
D.该有机物在一定条件下能够发生消去反应