(单选题)30: The train _____ arrive at 5 pm was late for six hours. A: due to B: have to C: suppose to D: owing to ...

(单选题)24: We supply every_____ for traveling. A: requisition B: requirement C: requisite D: request ...

(单选题)18: -- What's the date today? --___________. A:  It's a fine day B: It's Friday C: It's on Christmas Day D: It's June 26th ...

(单选题)6: I asked the bank for a _____. A: loaf B: load C: loan D: loam ...

34: When I was a girl of 10, I joined the school cross-country team and practiced twice a week, on the 1,8-km course I'd never really run before and I thought the course would be easy. It was a real shock I ran out of breath within the firs...

(单选题)28: -- Oh, no, we've missed the 8 o'clock train!--________ . There's another one in half an hour. A: You're right B: That's all right C: You're welco...

(单选题)22: How does she manage to keep her ________ when she eats so much? A: body B: figure C: state D: line ...

(单选题)10: This girl is  _    because she is always very happy whatever happens. A: optimistic B: noisy C: sad D: right ...

(单选题)8: 对形成感生电动势的非静电力是什么力和产生这种非静电力的原因，下面的表述确切的是： A: 非静电力是电场的力 ；它是由变化的磁场产生的 B: 非静电力是电场的力 ；它是由磁场产生的 C: 非静电力是感生电场的力 ；它是由变化的磁场产生的 D: 非...

(单选题)16: 一电荷q在均匀磁场中运动，下述说法正确的是 A: 只要电荷速度的大小不变，它朝任何方向运动时所受的洛伦兹力都相等。 B: 运动速度不变，但电荷量q 改变为 –q ，它所受的力将反向，而大小则不变。 C: 电荷量q 改变为 –q ，同时速度...