1.选择题- (共9题)
1.在现今“互联网+”的时代,密码与我们的生活已经紧密相连,密不可分.而诸如“123456”、生日等简单密码又容易被破解,因此利用简单方法产生一组容易记忆的密码就很有必要了.有一种用“因式分解”法产生的密码,方便记忆,其原理是:将一个多项式分解因式,如多项式:x3+2x2﹣x﹣2因式分解的结果为(x﹣1)(x+1)(x+2),当x=18时,x﹣1=17,x+1=19,x+2=20,此时可以得到数字密码171920.
2.在现今“互联网+”的时代,密码与我们的生活已经紧密相连,密不可分.而诸如“123456”、生日等简单密码又容易被破解,因此利用简单方法产生一组容易记忆的密码就很有必要了.有一种用“因式分解”法产生的密码,方便记忆,其原理是:将一个多项式分解因式,如多项式:x3+2x2﹣x﹣2因式分解的结果为(x﹣1)(x+1)(x+2),当x=18时,x﹣1=17,x+1=19,x+2=20,此时可以得到数字密码171920.
3.观察下列各数:
133可以分成13和3两部分,13﹣3×2=7×1,133能被7整除;
245可以分成24和5两部分,24﹣5×2=14=7×2,245能被7整除;
2394可以分成239和4两部分,239﹣4×2=231=7×33,2394能被7整除;
6139可以分成613和9两部分,613﹣9×2=595=7×75,6139能被7整除;
…
4.观察下列各数:
133可以分成13和3两部分,13﹣3×2=7×1,133能被7整除;
245可以分成24和5两部分,24﹣5×2=14=7×2,245能被7整除;
2394可以分成239和4两部分,239﹣4×2=231=7×33,2394能被7整除;
6139可以分成613和9两部分,613﹣9×2=595=7×75,6139能被7整除;
…
2.单项选择- (共11题)
10.
Many students like to recite , which are short,beautiful and rhythmic.
A.novels | B.poems | C.books | D.passages |
13.
—I’m still working on my project.
—Oh, you’ll miss the deadline. Time is _________.
—Oh, you’ll miss the deadline. Time is _________.
A.running out | B.going out |
C.giving out | D.losing out |
14.
I wish I a chance to talk to you last night, but you left so early.
A.have | B.had | C.had had | D.will have |
15.
his homework, he went out to meet his friends.
A.Having finished | B.finished | C.To be finished | D.To finish |
16.
You may use the room as you like, you clean it up afterwards.
A.as if | B.so long as | C.now that | D.as far as |
17.
I was in trouble,he would come to help me out.
A.Next time | B.The first time |
C.All the time | D.Every time |
19.
-------What is it made Carl determined to give up smoking?
-------Watching how his father died in pain from lung cancer.
-------Watching how his father died in pain from lung cancer.
A.which | B.how | C.who | D.that |
试卷分析
-
【1】题量占比
选择题:(9道)
单项选择:(11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:1
5星难题:0
6星难题:10
7星难题:0
8星难题:0
9星难题:0