It seems all right． 看来这没问题。
You want to warn someone to be careful. What do you say?
Be careful!
You are afraid that someone is going to drop some plates. begin:
Don't drop them.
cheese  乳酪，干酪      bread  面包      soap  肥皂     chocolate  巧克力   
sugar  糖     coffee 咖啡      tea  茶      tobacco  烟草，烟丝

       Experiments have proved that children can be instructed in swimming at a very early age. At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk. Babies of two months old do not appear to be reluctant to enter the water. It is not long before they are so accustomed to swimming that they can pick up weights from the floor of the pool. A game that is very popular with these young swimmers is the underwater tricycle race. Tricycles are lined up on the floor of the pool seven feet under water. The children compete against each other to reach the other end of the pool. Many pedal their tricycles, but most of them prefer to push or drag them. Some children can cover the whole length of the pool without coming up for breath even once. Whether they will ever become future Olympic champions, only time will tell. Meanwhile, they should encourage those among us who cannot swim five yards before they are gasping for air.

What kind of race do the children compete in?            The race is a game that is underwater tricycle race. Tricycles are lined up on the floor of the pool seven feet under water. The children compete against each other to reach the other end of  pool. Some children can cover the whole length of the pool without coming up for breath even once.