1.单选题- (共13题)






A.105 | B.109 | C.110 | D.215 |

A.10%,45 | B.90%,45 | C.10%,35 | D.90%,35 |
A.都相等,且为![]() | B.都相等,且为![]() | C.均不相等 | D.不全相等 |

(1)当n=1时,

(2)假设


则当




那么上述证明( )
A.过程全都正确 | B.当n=1时验证不正确 |
C.归纳假设不正确 | D.从![]() ![]() |
2.选择题- (共4题)
make, with, everything, like, other, it, photo, interesting |
Skin-diving (轻装潜水)is a new sport today. Many people show interest in this sport. Some go under water to see beautiful scenes(景色).{#blank#}1{#/blank#}go down into deep(深的) water to take pictures of swimming fish. It is not dark under water and there are a lot of big or little fish living there. Some of them use the sand to {#blank#}2{#/blank#}their homes. If you are under water, you will find you are just in a fish village.
There is no wind under water.{#blank#}3{#/blank#} is blue and green. During the day, there is much light. Sometimes people do not have to use a flash(闪关灯)to take {#blank#}4{#/blank#}under water.
This sport takes you into a wonderful new world. When you are under water,{#blank#}5{#/blank#} is easy for you to carry a big stone(石头). It is{#blank#}6{#/blank#}a trip to the moon!
Catching fish is one of the most {#blank#}7{#/blank#} parts of this sport. When fish swim nearby, you can catch them{#blank#}8{#/blank#} your hands.
make, with, everything, like, other, it, photo, interesting |
Skin-diving (轻装潜水)is a new sport today. Many people show interest in this sport. Some go under water to see beautiful scenes(景色).{#blank#}1{#/blank#}go down into deep(深的) water to take pictures of swimming fish. It is not dark under water and there are a lot of big or little fish living there. Some of them use the sand to {#blank#}2{#/blank#}their homes. If you are under water, you will find you are just in a fish village.
There is no wind under water.{#blank#}3{#/blank#} is blue and green. During the day, there is much light. Sometimes people do not have to use a flash(闪关灯)to take {#blank#}4{#/blank#}under water.
This sport takes you into a wonderful new world. When you are under water,{#blank#}5{#/blank#} is easy for you to carry a big stone(石头). It is{#blank#}6{#/blank#}a trip to the moon!
Catching fish is one of the most {#blank#}7{#/blank#} parts of this sport. When fish swim nearby, you can catch them{#blank#}8{#/blank#} your hands.
3.填空题- (共4题)
4.解答题- (共4题)
-
【1】题量占比
单选题:(13道)
选择题:(4道)
填空题:(4道)
解答题:(4道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:0
7星难题:0
8星难题:0
9星难题:21