The number of students in this school ______ by 5% every year.
A. rise
B. raise
C. rises
D. raises
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Health is the most ______(重要的) thing to every person.
The man is still _______(单身的) because too ugly.
He is suppose to ______(完成) the work today.
惠斯通电桥由四个臂（测量臂、比较臂和两个比例臂）、 和直流电源三部分组成。
A. 电压表
B. 安培表
C. 检流计
D. 滑动变阻器
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