①突触小体   ②递质    ③突触间隙    ④突触后膜    ⑤轴突．

My hair       short.

    Mom and dad are the most important people in your life. They have been looking after you since you were born， you should always love them. You should also get on well with them. But some children don't know how to do this. Here are some ways to help you.

    Spend more time with your parents. Don't spend too much time playing computer games or watching TV. Ask your parents to play with you. Talk or go outside with them.

    Be kind to your parents. You can make them happy with a smile when you come home. You can send your mother a card on Mother's Day or tell your father a joke on his birthday. You can also clean your room by yourself.

    Work hard. If you do your best in your studies， your parents will be proud of you.

江山的江郎山作为丹霞地貌的老年期被评为世界自然遗产。丹霞地貌是由巨厚的红色砂岩经地壳运动和外力作用形成的。下图是江郎山的景观图以及地壳物质循环图，完成下列问题。