问题
选择题
| 某同学安装电路时，想用一个开关同时控制两盏电灯的发光和熄灭，下列各种设计方法中正确的是（ ） A．只能将两盏灯并联 B．只能将两盏灯串联 C．两盏灯可以是串联，也可以是并联 D．以上说法都不正确 |
答案
答案：C
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| 某同学安装电路时，想用一个开关同时控制两盏电灯的发光和熄灭，下列各种设计方法中正确的是（ ） A．只能将两盏灯并联 B．只能将两盏灯串联 C．两盏灯可以是串联，也可以是并联 D．以上说法都不正确 |
答案：C
完型填空。（每小题2分，共20分） 根据短文内容，从A、B、C、D四个选项中选出一个能填入相应空格内的最佳答案。 Worries about school bus safety have drawn much attention. Now schools in some poor areas are looking 1 some other ways to go to school. In the countryside, students are living in different places. And there isn’t enough time for school buses to go around and pick up 2 student. So the most useful way is to let students living in the 3 village take a special school bus which is for them only. And the cost is 4 by their parents and the school. Each bus is asked to carry only five students on the same route(路线) every day. Traffic police are also making daily checks to make sure drivers don’t carry 5___ than 5 students. For a bus like this, the drivers can 6 make any money. So schools pay 300 yuan to drivers every month. The rest comes from the parents’ pockets（口袋）. The roads to the students’ homes are rough(崎岖的) and sometimes even dangerous, 7 falling rocks and narrow（狭窄的） bridges. After spending at least an hour on the road, the students finally make it home. 8 the money for taking a bus has increased and it’s not easy for parents to make money, they are glad to know that their children will 9 home safely each day. And they feel happy to see their child enjoy their time at school. But one girl says she’s seen the big yellow school 10 on TV, and wonders when she’ll ride one of her own.
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