题目

用数学归纳法证明1+++…+＜n(n∈N*,n＞1),第一步验证n=2时,不等式左边计算所得的项是(    )A.1                 B.1+               C.1++                D. 答案：解析：当n=2时,左边=1++.答案：CThis is a book show.Read and enjoy them in your free time!Let’s do pleasure reading together.Greg Heffley is at school.His middle school is going to hold a dance party,but it is very difficult for Greg to find anyone to go with.Finally he finds a girl from his class luckily.That is the beginning of The Third Wheel story.This book is full of jokes and interesting pictures.By Jeff KinnneyBean’s older sister goes to a summer camp,but Bean can’t join her because she is too young.So Bean and her best friend,Ivy,decide to create their own camp.They come up with all the activities and,of course,they make the rules.Their happiness and kindness will,make you want to keep reading.By Annie BarrowsStick Dog is a dog that lives in an empty pipe(管子).He has four friends,named Pooh-Pooh,Strips,Karen and Mutt.When Stick Dog smells delicious hamburgers,he and his friends decide to steal the food from a human family that is having a picnic in Picasso Park.Along the way,they face a lot of funny challenges.By Tom WatsonZoe and Alice’s mother saves dogs.But dogs aren’t the only things that need to be saved.The family’s new neighbor,Philip,doesn’t speak,and no one knows why.White Fur Flying is all about understanding the love from both inside and outside.Although it is a little sad,the book is good to read.By Patricia Maclachlan【1】We can find out is filled with lots of funny jokes and pictures.A. The Third Wheel B. Stick DogC. White Fur Flying D. Ivy and Bean【2】What do Bean and Ivy decide to do?A. Join a school dancing party. B. Steal food from the family.C. Save dogs in their community. D. Set up their own camp.【3】What does the writer think of the book White Fur Flying?A. Funny. B. Humorous. C. A little sad. D. Boring.【4】Which of the following is TRUE?A. Stick Dog lives in an empty box.B. Stick Dog and his friends decide to steal food from a picnic.C. Because of the smell of delicious chicken,Stick Dog decides to steal some food.D. Stick Dog is a dog’s name,not a book’s name.【5】The books above are mainly written for .A. middle-aged adults B. kids or teenagersC. elderly people D. college students