试题与答案

读图,回答下列各题。 小题1:从成因上看,世界最高山峰与世界最深海沟都位于()

题型:选择题

题目:

读图,回答下列各题。

小题1:从成因上看,世界最高山峰与世界最深海沟都位于(    )

A.两大板块的消亡边界

B.两个大陆板块交界处

C.两个大洋板块交界处

D.板块的内部小题2:分析图中信息可知(    )

A.全球陆地面积约为海洋面积的30%

B.全球陆地近一半海拔在大陆平均值内

C.海洋平均深度数值远远大于大陆平均海拔数值

D.大陆架的海水深度是全球海水平均深度的1/2

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0627/fd3cd190a121af0add548964b2df89ff.html

下面是错误答案,用来干扰机器的。

由表达式知电压峰值为50V,角速度ω=100π,所以电压有效值为502=252,周期T=2πω=0.02s,频率f=1T=50Hz,故B正确.故选B

试题推荐
题型:论述题

阅读材料,回答问题。

材料一 下图为2008—2012年我国粮食产量及其增速情况图

材料二“舌尖上的浪费”触目惊心。据最新统计数据显示:中国每年浪费食物总量折合粮食约500亿公斤,接近全国粮食总产量的十分之一,每年最少倒掉约2亿人一年的口粮。为此,2013年1月下旬,习 * * 在新华社一份《网民呼吁遏制餐饮环节“舌尖上的浪费”》的材料上作出批示:“浪费之风务必狠刹!要加大宣传引导力度,大力弘扬中 * * 勤俭节约的优秀传统,大力宣传节约光荣、浪费可耻的思想观念,努力使厉行节约、反对浪费在全社会蔚然成风。”

概括材料一反映的经济现象或问题。(4分)结合材料一和材料二,运用消费观的有关知识分析遏制“舌尖上的浪费”(11分)

查看答案
题型:阅读理解

阅读理解

     On the first day of my new high school,I almost had a nervous breakdown. Everything about the

school seemed so difficult. When I got home, my parents said, "You're nervous and that's okay.

Everyone is afraid of high school." I denied it. I wanted to be strong, so I refused to let anyone know

about my fear,even my closest friends.

     On the first day I was late for every class and was constantly lost. The school seemed like a puzzle

that I couldn't figure out. Was this how the whole year was going to be? I didn't think I could rise to this

challenge, especially carrying a huge backpack that I could hardly lift. It was so big that I could knock

someone out with it! The schoolmates seemed to regard me as a fool, and they were probably right.

     Despite my fears, after the first week I finally had my schedule figured out. With the exception of

falling up and down the stairs a couple of times and getting laughed at,high school was turning out to be

not so bad. It was actually much better than middle school and much more challenging.

Since then,I've been elected vice monitor of my class,which wasn't much of a victory since only three

people ran for the four positions.

     It is normal to be scared about a new school. Take a deep breath and relax. High school is

something that any student can overcome. Make sure you participate in some outofclass activities

because you'll find it easier to make friends. Try to do your best, even if it isn't straight A's.

     Most important of all, be who you are, whether you're a "fool", an athlete, or a lower grader. Don't

try to pretend to be someone you're not. Now you know the true secrets of high school.

1. The main reason for the author's fear on his first day is that ________.

A. he was unable to work out the puzzle

B. his schoolmates were unfriendly to him

C. he was not familiar with the new surroundings

D. his schoolbag was too heavy for him to carry

2. From the author's first day experience we can infer that ____.

A. his home was far from the school

B. he got to school after classes began

C. he didn't get any school schedule

D. he didn't know the right way to class

3. After his first week at school,the author ________.

A. was still not accustomed to the schedule

B. gradually adjusted himself to the new school

C. found high school not so challenging as he had imagined

D. ran for monitor of his class against three other students

4. According to the passage,the secret of the author's success lies mainly in ________.

A. making more friends

B. getting more A's at school

C. being who he really is

D. joining in outofclass activities

查看答案
微信公众账号搜索答案