1.单选题- (共4题)


A. 地面对球的支持力变大,摩擦力变大
B. 地面对球的支持力变小,摩擦力变小
C. 球刚开始运动时,地面对球没有支持力
D. 球刚开始运动时,球受到的摩擦力最大

A.上述过程中,推力F做的功为FL |
B.上述过程中,斜面对小球做的功等于小球增加的动能 |
C.上述过程中,推力F做的功等于小球增加的机械能 |
D.轻绳与斜面平行时,绳对小球的拉力大小为mgsin45° |

A.波沿x轴负方向传播,波速V=10m/s |
B.波沿x轴正方向传播,波速V=10m/s |
C.t=0.2s时刻,质点c向y轴负方向运动 |
D.t=0.3s时刻,质点b的位移y=10cm |
2.选择题- (共7题)
“等你考上大学,妈妈就享福了;等你毕业工作了,妈妈就享福了;等你结完婚,有了孩子,妈妈就享福了;奶奶,等我长大了,就让你享福啊……”央视公益广告《别让等待成为遗憾》给我们的启示主要是( )
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During the National Day holidays last year, my parents and I had a trip abroad. My father is i{#blank#}1{#/blank#} in old countries so he chose to visit India. India is in the south of A{#blank#}2{#/blank#}. It has a long h{#blank#}3{#/blank#} and the most famous s{#blank#}4{#/blank#} is Taj Mahal( 泰姬陵).
We f{#blank#}5{#/blank#}to India from Shanghai. It took us just a few hours to get there. I c{#blank#}6{#/blank#}a camera with me so that I could take photos of the beautiful views. There are many elephants in India. The guide a{#blank#}7{#/blank#}me to ride on an elephant. Though my heart was f{#blank#}8{#/blank#} with fear, I rode on it at last. I rode on the elephant for half an hour and it was an exciting e{#blank#}9{#/blank#}. My father took some photos of me. We e {#blank#}10{#/blank#} ourselves in India. What's more, we learned more about this old country.
师生共同组成学校生活共同体,师生之间人格平等、互相尊重,互相学习、教学相长。但是师生之间难免有矛盾。化解与老师的误解、矛盾,增进与老师的感情,一切从主动沟通开始。沟通需要掌握的有效方法有( )
①角色互换──从老师的角度看问题 ②正确对待老师的表扬和批评
③不能原谅老师的错误 ④注意场合,礼貌待师
3.解答题- (共2题)

(1)求微粒所带电荷量q和磁感应强度大小B;
(2)求微粒在A、C间运动的加速度和运动到C点时的速度大小

(3)求0~2T时间内微粒经过的路程。
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【1】题量占比
单选题:(4道)
选择题:(7道)
解答题:(2道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:2
5星难题:0
6星难题:3
7星难题:0
8星难题:1
9星难题:0