问题 不定项选择

如图所示,一物体A放在粗糙板上随板一起在竖直平面内沿逆时针方向做匀速圆周运动,且板始终保持水平,位置MN在同一水平高度上,则

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A.物体在位置MN时受到的弹力都大于重力

B.物体在位置MN时受到的弹力都小于重力

C.物体在位置M时受到的弹力大于重力,在位置N时受到的弹力小于重力

D.物体在位置N时受到的弹力小于重力,在位置M时受到的弹力大于重力

答案

答案:B

写作题

书面表达

请你根据图片内容以“Jack’s school day”为题 简要介绍Jack一天的生活。

要求:1、字数:60字左右

2、能完全表述图片的内容,可以适当发挥。

3、书写规范,语言生动,准确无误。

                

This is Jack’s school day. He is a middle school student.____________           

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                      

                                                                       

                                                                       

                                                                       

Good luck

问答题 论述题