问题 选择题

(2011年湖南株洲,12题) 如图是地壳中各元素的含量(质量分数)图,据此判断下列说法正确的是(   )

A.含量最多的元素是非金属元素

B.含量最多的元素是金属元素

C.铁的元素符号为FE

D.由图可知,各元素在地壳中的含量相差不大

答案

答案:A

地壳中元素的质量分数,由高到低的前五种元素分别是:氧、硅、铝、铁、钙.地壳中含量最多的元素是氧元素,含量最多的金属元素是铝元素.

A、地壳中含量最多的元素是氧元素,占48.60%,故选项正确;

B、地壳中含量最多的金属元素是铝元素,故选项错误;

C、“铁4.75%”指的是地壳中铁元素的质量分数,不是单质,故选项错误;

D、由图可知,各元素在地壳中的含量有较大的差异,故选项错误;

故选A

单项选择题
阅读理解

阅读理解。

     Young women are more adventurous than young men when traveling abroad in gap years.One in

three female backpackers visits more than three countries during a year out and travels alone, according

to new research.

     By contrast, the majority of their male counterparts(对手方) visit only one country and tend to travel

in groups, says a survey by the Gap Year company, which provides information and services for students

considering taking a year out.

     More women than men say that their prime reason for taking time off is to see the world and

experience different cultures.Men were more likely to rank "having fun" higher on their list of priorities.Women were more likely to value the challenge of a foreign trip, and many cited reasons such as learning

a language and meeting new people.

     The more adventurous gap years taken by women seem to work to their benefit; more than three

quarters of those surveyed reported increased confidence, self-reliance and independence, whereas only

half of the men had that experience.

     The research also showed that women were more likely to do voluntary work while travelling, with

more than one in ten helping with teaching or development projects.One of the reasons given for this is

a wish to see the country in an authentic(真正的) light.

     A greater proportion(比率) of women than men faced objections or criticism from their families over

their gapyear plans.Among the men surveyed, lack of money was the main barrier to travel.

     Carolyn Martin, a doctor from London, was a typically confident female traveller.Starting in Cape

Town, she travelled around southern Africa and Australia with a string of unusual and sometimes

dangerous jobs.

     "I had one job chasing elephants off the runway in Africa by banging a stick against a pan," she re

called."It was OK but one day I did get chased by one."

     She said that she had travelled alone because "you meet more people".

1.According to the article, ________.

A.most of the women students will travel abroad during the summer holidays

B.one third of the women students will travel abroad in a year

C.women students are more likely to travel abroad alone in gap years

D.women students are willing to travel abroad in a group

2.More women than men say that their prime reason for taking time off is______ .

A. to make a study of history

B. to have fun

C. to see the world and experience different cultures  

D. to do voluntary work

3.Which of the following statements is TRUE?

A.Men students will travel less during the gap year because of their parttime jobs.

B.Women students will travel more but face more objections.

C.The article suggests that women travelling alone will have dangerous experiences.

D.Men students prefer to travel inside their own country to going abroad.

4.Which of the following would be the main point of the passage?

A.Girls Get the Best out of Gap Years

B.Boys Lack Courage in Gap Years

C.For Fun or for Adventure?

D.Young Women Are More Adventurous