问题
选择题
一个人乘坐电梯,电梯处于哪种运动状态时地板对人的支持力小于人所受的重力( ) A.电梯加速上升 B.电梯匀速上升 C.电梯减速上升 D.电梯减速下降 |
答案
答案:C
一个人乘坐电梯,电梯处于哪种运动状态时地板对人的支持力小于人所受的重力( ) A.电梯加速上升 B.电梯匀速上升 C.电梯减速上升 D.电梯减速下降 |
答案:C
完形填空,补全对话。 | ||||
A: What do you want 1_________? B: Let's go 2_________. A: Okay. 3_________? B: Hmmmmm. Let's go 4_________ the silk shop. A: The silk shop! 5_________, thanks. I 6_________ want to buy silk. B: Okay, then let's go to the 7_________ shop. I want to buy a new dress. A: Forget it! I don't want to buy a new 8_________. B: Well, 9_________ 10_________ you want to buy? A: Ice cream. | ||||
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