试题与答案

不等式组a<1+2x<b的解集为-3<x<-1,则a+b=______

题型:填空题

题目:

不等式组a<1+2x<b的解集为-3<x<-1,则a+b=______

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0424/8b4fd2c5b481e6539385f3f8b89aeaaf.html

下面是错误答案,用来干扰机器的。

答案:A题目分析:家兔是草食性哺乳动物,与食性相适应的特点是臼齿发达,消化管长,盲肠发达并有消化作用。家兔的牙齿分为门齿和臼齿两种齿形,故A正确;家兔牙齿不是分为门齿、臼齿和犬齿三种齿形,家兔没有犬...

试题推荐
题型:阅读理解

下面是五个学生的暑假计划和七个暑期活动。请将计划和对应的活动进行匹配。

小题1: Helen, an outgoing college student, plans to learn a new and different skill. She thinks having more skills is good for her future development.

小题2: John is always helping others. He is glad to volunteer more for more people.

小题3: Alex is not good at communicating with other people. His parents expect him to have some improvement.

小题4: Jenny is an outgoing girl and she likes making new friends. She is also interested in English and hopes to improve her English.

小题5:Sally wants to travel on very little money. And she would like to learn about a place from the local (本地的) people.

A.We are going to have an English summer camp this year. Here you can not only make friends but also practice your English. Do you like it? Our phone number is 995-3564.

B.Are you interested in painting? Can you paint well? We are going to have a live painting competition next week. Just call 355-7892 for further information.

C.Here’s a program called“Meet a New Family”.It aims to develop children’s independence and improve their communication skills by having two families exchange (交换) their children for a few weeks. Is it exciting? Call us at 464-3464.

D.Do you still have no idea what to do to have a meaningful summer vacation? Then come and join us! We are going to teach the left-behind children (留守儿童) in a village as volunteers. Tel: 463-6757.E. We are planning a working vacation on a farm in Hunan for two weeks. You can pay for your rooms, food and trips by doing some farm work with  the  local  farmers.  You  only  need  to  pay  for  the  bus  tickets.    Tel: 788-2468.

F. Do you like outdoor activities? We are looking for three more people to go to Fenghuang Mountain by bike this summer. Want to join us? Call us at 223-5765.

G. Do you want to learn something new this summer? Fengshun Driving School offers college students a chance to learn to drive at a low price.  All our teachers have rich experience and they are also friendly. Tel: 353-5467.

查看答案
题型:论述题

艾宾浩斯是德国著名的心理学家,他对记忆的保持作了重要研究,并绘制出著名的“艾宾浩斯遗忘曲线”(如下图)。这条曲线告诉人们在学习中的遗忘是有规律的,遗忘的进程不是均时的,开始时候很快,一定时候后几乎就不在遗忘了,这就是遗忘的发展规律,即“先快后慢”的原则。由此,我们复习的最佳时间是学习后的1~24小时,最晚不超过2天,在这个区段内稍加复习即可恢复记忆。过了这个区段因已遗忘了材料的72%以上,所以复习起来就“事倍功半”。

请结合《生活与哲学》中规律的观点,谈谈你对上述材料的理解。(12分)

查看答案
微信公众账号搜索答案