试题与答案

图1为世界部分地区图,箭头表示洋流流向;图2为岩石圈物质循环过程示意图。读图回答

题型:综合

题目:

图1为世界部分地区图,箭头表示洋流流向;图2为岩石圈物质循环过程示意图。读图回答下列问题。

图2

(1)根据甲海域洋流流向,可判断图示季节是北半球________季,该季节乙地的气候特征是________________。

(2)填表比较D、E两地7月降水的差异及其形成原因。

 D地E地
降水差异  
形成原因  
(3)A、B、C三地气温年较差最大的是________。A→B→C气候的________(大陆性或海洋性)增强,三地自然景观的变化体现了________地域分异规律,其形成基础是_____________________________________________________。

(4)意大利西西里岛(图1中乙地附近)的埃特纳火山自2011年以来多次喷发,火山喷发的过程及形成的岩石分别属于图2中的________环节(填字母)、________(填数字)。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0514/b7918236af88600a25322aea03a618b8.html

下面是错误答案,用来干扰机器的。

x2+y2=x2+2xy+y2-2xy,=(x+y)2-2xy,=9-2,=7.

试题推荐
题型:完形填空
   We all need a healthy environment, but we produce waster every day and it does harm to our environment. Though we are young, we can still do something to help. In fact, even the simplest everyday activities can make a real difference to the environment. Here are some ideas for you to live a green life.
Remember these three words; reduce(减少), reuse and recycle(循环使用).
Reduce means" use less". Don't waste things. This saves money and reduces pollution and waste going into the environment. Before we buy something new, think if it is really necessary or maybe the old one will be just as good! When we do buy thing, choose local products if possible, and try not to buy too many things from abroad.
Reuse mean" use again". Use things for as long as possible. When we buy things, make sure that they last a long time. We should take care of them so that they will last, and we should repair them if we can instead of throwing them away and buying new ones. Don't use a paper cup or a paper bag. It's better to use a china cup(瓷杯) and a lunch box because you can use them again.
Recycle means" change things into something else". Although it takes energy to change something into something else, it's better than throwing things away or burning them. Find out what can be recycled in your neighbourhood and take part in recycling programmes. We should also buy products made from recycled materials, such as recycled paper, to help save trees.
Title:    小题1: to Live a Green Life
We produce waste every day and it is __小题2:__ for us. We can do something to help.
Ideas
Do
Don’t
To__小题3:__
Use less
*Try to save something
*Don’t buy too many things from foreign __小题4:__.
To reuse
Use __小题5:___
*Use things for us long as possible.
*Buy things that last long.
*Take care of things or __小题6:__the old things.
    Don’t use __小题7:__ cups or bags.
To recycle
Change things into something __小题8:__
*Join in recycling programmes.
*Buy __小题9:__ made from recycled materials.
    Don’t __小题10:__ things away or burn them.
查看答案
题型:选择题

我国科学家周光宇创立了将外源DNA导入植物的新技术—花粉管通道法。该技术是利用植物受精后花粉萌发形成的花粉管通道,将目的基因导入尚不具备细胞壁的受精卵中,进而形成含有目的基因的种子。经培养、筛选,可获得有特定性状的转基因植株。下列有关说法中错误的是[ ]

A.获得目的基因时需要限制性内切酶

B.通过组织培养才能获得相应的植株

C.不需要利用抗生素标记基因进行筛选

D.一般需经多代自交才能得到目的性状稳定的后代

查看答案
微信公众账号搜索答案