问题 问答题

钻石的重量与价格的关系如何?

答案

参考答案:

对于成品钻而言,在其他条件(颜色、净度和切工)都相同的情况下,重量越大,其价格越高。在钻石行业中,钻石的价格是用“每克拉多少价”(Pricepercarat)来表示。通常缩写成P.C.。

由于自然界越大的钻石越稀少,同时,在社会上广泛存在拥有1ct,2ct,3ct的钻石比拥有稍小于1ct、2ct、3ct整数钻石更加感到荣幸的心理。这两种因素被清楚地反映在每颗钻石价格报价上。因而,市场上钻石价格与克拉重之间并不是简单的线性关系,而是一条在克拉溢价处出现台阶的线。

单项选择题
阅读理解

     Once upon a time, there was a little weasel (鼬鼠). His name was Horace. Unlike all the other

weasels, Horace was very bookish.

     He had a copy of The Little Prince that he had found out behind a chicken house. The third chapter

of the book was missing and the back cover was broken, but it was the only book he had, and he loved

it. While all the other weasels spent their time playing, Horace would read instead. This made the other

weasels surprised, but they let it go by.

     Then, one day, the Earth was invaded (入侵) by space aliens. These aliens were a group of giant

librarians. Because they were librarians, they had of course done their research before they began their

invasion.     

     Meanwhile, the librarians went out to make contact with the species with whom they felt the most

affinity (密切关系). They had hoped that they could find the great works of weasel literature, but they

found that this was not so. The giant weasel librarian aliens were very disappointed. "Is there no weasel

at all who loves books as we do?" (Naturally, they had learned to speak the weasel language.) "No,"

said the weasels.

     At last, they came to the town where Horace lived. Here the weasels said "Yes!" They found Horace

and placed him in their libraries, where at last he got a complete edition of The Little Prince. He read it

every day for the rest of his life.

1. From the text we can infer that        .

A. Horace had a copy of The Little Prince

B. the space aliens looked much like weasels

C. the space aliens hate weasels

D. Horace and the space aliens had the same hobby

2. Which of the following is TRUE about Horace?

A. Horace liked playing with other weasels.

B. Horace got a book behind a chicken house.

C. Horace read the book when other weasels took a rest.

D. Horace lived in the town with the librarians.

3. According to the text, give the right order of the following events.

a. The space aliens found Horace and gave him a job as a librarian.

b. Horace had a copy of The Little Prince but it was broken.

c. The space aliens had done their research before they began their invasion.

d. The space aliens went to look for a weasel who loved reading books.

A. a, b, c, d  

B. b, a, c, d,  

C. b, c, d, a  

D. c, a, b, d

4. The underlined word "bookish" probably means "          ".

A. foolish  

B. fond of reading

C. childish    

D. selfish

5. The text above is a (n)        .

A. fairy tale  

B. scientific report

C. poem  

D. essay (随笔,小品文)