问题
选择题
如图所示,一人站在电梯中的体重计上,随电梯一起运动。下列各种情况中,体重计的示数最大的是
A.电梯匀减速上升,加速度的大小为1.0 m/s2
B.电梯匀加速上升,加速度的大小为1.0 m/s2
C.电梯匀减速下降,加速度的大小为0.5 m/s2
D.电梯匀加速下降,加速度的大小为0.5 m/s2
答案
答案:B
如图所示,一人站在电梯中的体重计上,随电梯一起运动。下列各种情况中,体重计的示数最大的是
A.电梯匀减速上升,加速度的大小为1.0 m/s2
B.电梯匀加速上升,加速度的大小为1.0 m/s2
C.电梯匀减速下降,加速度的大小为0.5 m/s2
D.电梯匀加速下降,加速度的大小为0.5 m/s2
答案:B
阅读理解。 |
Do you want to go by ship (轮船)? To Australia or anywhere (任何地方). A big ship looks like a big house. There are rooms for everyone. In the day you can swim in the pool (游泳池) or play games on the ship. You can even (甚至) see a film on the ship. Sometimes you can see birds flying around you. They are flying here and there. |
1. A big ship looks like ______. |
[ ] |
A. a pool B. a house C. a school D. a cinema |
2. You can swim ______. |
[ ] |
A. in the day B. in the evening C. in the afternoon D. in the sea |
3. — What can you do on the ship? — ______. |
[ ] |
A. Swim B. Play games C. See a film D. All of them |
4. We can play games ______. |
[ ] |
A. on the ship B. in the rooms C. at the cinema D. in the swimming pool |
5. How do you like it? |
[ ] |
A. It's a very big house. B. I can swim on it. C. I'll be very happy. D. It's wonderful (精彩的) |