1.选择题- (共7题)
根据短文内容,回答下列问题。
“Who needs a shopping mall(购物中心)if you have Taobao?" says Wang Lin, 28, a writer in Beijing.
Taobao, China's largest online shopping site(网上购物网站), has become an important part of Wang Lin's life. She spends lots of money on Taobao.
A growing number of Chinese Internet users like Wang have found the joys of online shopping. Most online shoppers are students or young workers. More women shop online than men; Clothing and home-use products are the most popular on line.
It was reported that more than 250 billion (十亿) yuan was spent on online shopping last year, 80% through Taobao.
Taobao means "looking for treasure" in Chinese. People can find almost everything they need on Taobao, from clothes to books, from candies to DVD players.
You may question the security of online shopping, Wang Lin said, "It's very safe and convenient. Unless you receive the products from the sellers and are satisfied with them, the shop owner will not get the money. You can also get your money back if you want to return the products.”
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2.单选题- (共2题)
卫星 | 发现者 | 发现年份 | 距土星中心距离/km | 质量/kg | 直径/km |
土卫五 | 卡西尼 | 1672年 | 527 000 | 2.31×1021 | 765 |
土卫六 | 惠更斯 | 1655年 | 1 222 000 | 1.35×1023 | 2 575 |
A.土卫五绕土星运动的周期较小 |
B.土卫五绕土星运动的线速度较小 |
C.土卫六绕土星运动的角速度较大 |
D.土卫六绕土星运动的向心加速度较大 |

A.![]() | B.![]() | C.![]() | D.![]() |
3.多选题- (共1题)
(题文)
如图所示,边长L=0.2m的正方形线圈abcd,其匝数n=l0,总电阻r=2Ω,外电路的电阻R=8Ω,ab边的中点和cd边的中点的连线OO′ 恰好位于匀强磁场的边界线上,磁场的磁感应强度B=1T,若线圈从图示位置开始计时,以角速度ω=2rad/s绕OO′ 轴匀速转动。则以下判断中正确的是

A.在![]() |
B.闭合电路中感应电动势的瞬时表达式为![]() |
C.从t=0时到![]() |
D.从t=0时到![]() ![]() |
4.解答题- (共2题)


(1)A点和C点间的水平距离?
(2)木块与斜面间的动摩擦因数μ?
(3)木块从被弹丸击中到再次回到C点的时间t ?(保留两位有效数字,

(1)磁场区I在沿斜轨方向上的宽度d;
(2)棒从开始运动到刚好进入水平轨道这段时间内ab棒上产生的热量;
(3)若棒在t2时刻进入水平导轨后,电流计G的电流大小I随时间t变化的关系如图(丙)所示(I0未知),已知t2到t3的时间为0.5s,t3到t4的时间为1s,请在图(丁)中作出t2到t4时间内外力大小F随时间t变化的函数图像。

5.实验题- (共2题)

(1)在图示装置中,①是固定在小车上位移传感器的发射器部分,②是接收部分。在该实验中采用控制变量法,保持小车所受拉力不变,用钩码所受的重力作为小车所受拉力,为了减小实验误差,应使钩码质量尽量__________些。(填“大”或“小”)
(2)改变小车的质量,多次重复测量。在某次实验中根据测得的多组数据可画出a-1/M关系图线,

①如果摩擦力不能忽略,则画出的a-1/M图线为图示中的____________。(填“甲”或“乙”或“丙”)
②(单选题)该实验中某同学画出的图线中AB段明显偏离直线,造成此误差的主要原因是(___)

A.小车与轨道之间存在摩擦 |
B.导轨保持了水平状态 |
C.所挂钩码的总质量太大 |
D.所用小车的质量太大 |
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【1】题量占比
选择题:(7道)
单选题:(2道)
多选题:(1道)
解答题:(2道)
实验题:(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:5
7星难题:0
8星难题:0
9星难题:0