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 to y is invented that way.Some of the best inventions are made by kids.Thirteen-year-old Casey 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 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（調(diào)整）.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 Bio tee or latest jump ropes.

（1）Why do some adults work in locked rooms when they think up new toys？

A

A

A．To keep their ideas from being stolen.
B．To invent more toys.
C．To make more money.
（2）What is Casey's golf tee made out of？

C

C

A．Wood.
B．Gold.
C．Recycled paper.
（3）How old was Jessica when she invented the new kind of jump rope？

C

C

A．13.
B．10.
C．8.
（4）Whom may the writer call on to try ideas for new inventions？

B

B

A．Teachers.
B．Kids.
C．Parents.