1.单选题- (共3题)

A.摩擦力大小不变,方向向右 |
B.摩擦力变大,方向向右 |
C.摩擦力变大,方向向左 |
D.摩擦力变小,方向向左 |

A.灯泡立即熄灭 |
B.灯泡逐渐熄灭 |
C.灯泡有明显的闪亮现象 |
D.只有在RL≫R时,才会看到灯泡有明显的闪亮现象 |

A.匀速滑动时,I1=0,I2=0 | B.匀速滑动时,I1≠0,I2≠0 |
C.加速滑动时,I1=0,I2=0 | D.加速滑动时,I1≠0,I2≠0 |
2.选择题- (共6题)
Different countries and people have different manners(举止).Here are some examples:If you visit a Chinese family,you should knock at the door first.When the door opens,you should not move before the host says “Come in,please.” Before coming into the house in Japan,it is good manners to take off your shoes.In European(欧洲的) countries,even if your shoes are very dirty,it is not necessary to take them off.In England,a guest(客人) always finishes the drink or the food to show that he enjoys it.This will make the host very pleased.
根据短文内容完成信息表,每空一词。
Countries | Situations | Good manners |
China | {#blank#}1{#/blank#}a Chinese family | Knock at the door first |
{#blank#}2{#/blank#} | Before entering the house | Take off your{#blank#}3{#/blank#} |
European countries | Before coming into the house | It is{#blank#}4{#/blank#}to wear(穿着) your shoes |
{#blank#}5{#/blank#} | At dinner | Finish the drink or the food |
Life in the{#blank#}1{#/blank#}will be different from life today. Scientists will make{#blank#}2{#/blank#} (电脑) much smaller and more u{#blank#}3{#/blank#} .People will {#blank#}4{#/blank#} (工作) fewer hours than they do now and this will make life easier. Traveling will be{#blank#}5{#/blank#}cheaper and more people will go to other{#blank#}6{#/blank#} (国家) for holidays.
We will use more land to build new cities and less land for cows and sheep. Then there will{#blank#}7{#/blank#}less room for cows and sheep, so m{#blank#}8{#/blank#} will be more expensive. No one will eat {#blank#}9{#/blank#} every day. I{#blank#}10{#/blank#}we eat more fruit and vegetables, and we will become healthier.
3.多选题- (共2题)

A.河北岸的电势较高 | B.河南岸的电势较高 |
C.电压表记录的电压为9mV | D.电压表记录的电压为5mV |

A.线圈中O时刻感应电动势为零 |
B.线圈中D时刻感应电动势为零 |
C.线圈中D时刻感应电动势最大 |
D.线圈中O至D时间内平均感应电动势为![]() |
4.解答题- (共2题)


(1)ac棒中感应电动势的大小;
(2)回路中感应电流的大小和方向;
(3)维持ac棒做匀速运动的水平外力F的大小和方向.
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【1】题量占比
单选题:(3道)
选择题:(6道)
多选题:(2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:1
5星难题:0
6星难题:2
7星难题:0
8星难题:4
9星难题:0