在下列蛔虫的形态结构特点中，哪项是不属于适于寄生生活的（  ）

读最佳人口规模示意图，回答下列问题。

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    James is a good student and he has lots of friends，but he also has a problem. Some older boys are bullying(欺负)him at school. James is very unhappy and he doesn't know what to do about it. Here are some suggestions to him and other teenagers in this situation.
    Don't feel worried. It's not your fault(过错)! Being bullied can make you feel very lonely and angry，but you are not alone. Don't feel that you have to hide the problem. You should find a person you can trust，and tell them. It might be your teacher，your parents，or even your friend's parents. After you tell someone，you will get some support and feel some relief(解脱).
    Speaking to an adult might make you nervous，but here are other things you can do. Some people express their feelings more easily on paper. Write a letter to someone or keep a diary. Include all the details(细节)about what the bullies do, as well as when and where the bullying happens. You can use it as proof to show what is going on. And it is a wonderful idea to show your letter or diary to a teacher or another responsible adult. Then the bullies will feel very afraid if their names appear in a letter!
    Also，don't show you are sad and don't try and fight with the bullies. You could get in trouble yourself. Ignore them and just walk away. The bullies will soon stop.

如图是氢气在氯气中燃烧生成氯化氢的微观模拟图，请回答下列问题：

2016年1月16日，亚洲基础设施投资银行开业仪式在北京举行。******出席开业仪式并致辞，他说，中国开放的大门永远不会关上，欢迎各国搭乘中国发展的“顺风车”。这说明（　）

①我国坚持对外开放的基本国策和互利共赢的开放战略   ②我国已经成为世界经济强，为世界各国提供了发展机遇

③在国际事务中，我国树立了负责任的大国形象             ④世界各国经济的发展依赖于中国