题目内容：

    When you use crayons, you can color things any way you want. Life wasn’t always so colorful, though. A hundred years ago, all crayons were black. They were used in factories and shipyards. Kids couldn’t use them because they were toxic.

Then a company called Binney & Smith had an idea. They decided to make Crayola crayons for kids and teachers to use in schools. They figured out a formula（配方）that was safe, and they also decided to add colors. The first box of eight Crayola crayons included black, brown, blue, red, purple, orange, yellow, and green. The box cost five cents. The crayons were a huge hit!

Today, many companies make crayons, but Crayola is still the biggest. They take crayons very seriously especially when it comes to colors.

For example, Crayola has a team of seven chemists and chemical engineers who do nothing all day but develop new crayon colors. Their laboratory adds the unique, secret formula to every crayon color. They blend（混合）different colors to come up with new shades（色度）. Once the engineers discover a new color they like, they test it on hundreds of kids and parents to make sure it’s really useful. Only then is a crayon ready for the box.

Then comes the hard part——figuring out what to name a new color. In 1993, Crayola introduced 16 new colors for its “Big box” of 96 crayons. More than two million kids and adults wrote in to advise on the names of the colors. Some winners were tickle me pink (bright pink), timber wolf (gray), purple mountains majesty (purple), tropical rainforest (bright green), granny smith apple (light green), and mauvelous (light pink).Over the years, Crayola has changed the names of some colors.

Around the globe, kids still say that red and blue are their favorite crayon on colors.

根据短文内容选择最佳答案。

1.The underlined word “toxic” in the passage means  “___________” in Chinese.

A.昂贵的 B.多彩的 C.有毒的

2.The second paragragh tells us _______.

A.the first box of Crayola crayons

B.the colors of Crayola crayons

C.a company called Binney & Smith

3.What do the engineers do when they discover a new color they like?

A.They throw away all the other colors.

B.They test it on kids and parents.

C.They draw pictures with it.

4.Which of the following is TRUE according to the passage?

A.Colorful crayons existed a thousand years ago.

B.Crayola is the biggest crayon company.

C.Red and brown are kid’s favorite colors.

5.What is the passage mainly about?

A.Some new color names suggested by kids.

B.The colors developed by engineers.

C.The making and naming of Crayola crayons.