Toys and games are fun，but inventing them is serious business.Big toy companies treat it even more serious，because the more toys they sell，the more money they make.They have adults who do nothing but think up new toys.Sometimes they even work in locked rooms so no one can steal their ideas!
   But not every new toy is invented that way.Some of the best inventions are made by kids.Thirteen-year-old Casey Golden loved to play golf.He invented a way to make the game more fun.He invented a new golf tee（球座）.It is called the Bio tees.Most golf tees are made from wood，but Casey's tee is made out of recycled paper.It does not harm the environment.Casey started his own company to make his new tee.He's already had orders for millions of them.
   Jessica Peach invented a toy when she was only eight.Jessica likes to jump rope.She jumps alone and she jumps with friends.To jump alone，you need a short rope.With friends，you need a long rope.So Jessica invented a new kind of jump rope.The length of Jessica's jump rope can be modified.It can be made long to jump with friends.Or it can be made short to jump alone.When you finish jumping，you can even turn the jump rope into a belt.Now Jessica has a business to sell her jump ropes.
   Do you have a great idea for a new invention？Give your idea a try.It may become the next Biotee or latest jump ropes.
（1）Workers in big toy companies sometimes work in the locked room to

A

A

.
A．keep their ideas safe
B．play games with each other
C．count the money they've made
（2）Which of the following sayings is closely related to Casey Golden's story？

A

A

A．Interest is the best teacher.
B．When in Rome，do as Romans do.
C．A thousand-mile journey starts with a single step.
（3）The underlined word "modified" in Paragraph 3 means

C

C

in English.
A．measured
B．recorded
C．changed
（4）What is the correct structure of the passage？ （P₁=paragraph 1）

B

B

A．
B．
C．