问题
单项选择题
对于采用光电控制的包装机械设备的隔离防护装置，当人员靠近危险工作区域时，应做到及时（）。
A.报警
B.自动停机
C.防护
D.隔离
答案
参考答案：B
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对于采用光电控制的包装机械设备的隔离防护装置，当人员靠近危险工作区域时，应做到及时（）。
A.报警
B.自动停机
C.防护
D.隔离
参考答案：B
| 阅读理解。 |
| Raising pets is a popular online game among teenagers. "More than 20 of my classmates have adopted(领养) pets online." Said Wang Hui from Beijing. If you go to some websites, you can adopt virtual(虚拟的) pets like penguins(企鹅), chickens, dogs and elephants. You can feed, wash, talk to and play with your pet. Dai Yingshuang of Shanghai said, "It's great fun and I have also learned how to take care of others." She usually asks her uncle to take care of her pet while she is at school. If you don’t feed and care for the pet, it will become unhappy and unhealthy. So raising an online pet means spending a lot of time online. This makes many parents worried. They fear it will have a bad influence on the children’s studies. Wang Zhaotong from Anhui has raised a penguin since last year. She said, "My parents know about the penguin and think it's okay." If the students can keep the balance between studying and playing, it's not bad for them to "raise" pets online. |
| 1. Over ______ students in Wang Hui’s class have adopted pets online. |
| A. 10 B. 20 C. half |
| 2. What does Dai Yingshuang think of raising pets online? |
| A. It's great fun. B. It wastes time. C. It's not interesting. |
| 3. Which of the following is Not Right according to the passage? |
| A. Raising an onlie pet doesn't mean spending lots of time online. B. If you don’t feed the pet, it will become unhappy and unhealthy. C. Raising pets online makes many parents worried. |
| 4. What does the underline “balance” mean? |
| A. 余额 B. 平衡 C. 结算 |
| 5. What does the passage mainly talk about? |
| A. It's bad to raise pets online. B. How to raise pets online. C. Raising pets online is popular among teenagers. |