如图分别是肘关节和机械杠杆示意图，据图回答：

王丽生活在一个和谐、民主、幸福的家庭中,家里每个人都“家事、国事、天下事,事事关心”。这不,他们正一边看《新闻联播》,一边聊天呢!

爷爷:这些当官的贪污老百姓的钱,在以前走走关系就没事了。

爸爸:现在是法治社会,与过去不同了。无论是谁都要依法办事,出了事都跑不掉,当官的也不例外,过去“贪了就跑,一跑就了”行不通了。

妈妈:看看看,电视上说国家设立宪法日,公职人员正式就职时向宪法宣誓,那我们就会更有安全感了!

王丽:妈妈你错了,安全感只有靠刑法才能得到根本保障。

请根据上述聊天内容,回答下列问题。

下列关于物质性质及用途的描述中，错误的是（　　）

阅读理解

    Being outgoing is good for your life. Those who are more outgoing may have more fun in life. In fact, being outgoing is not so hard as you think. Even shy people can be outgoing.

    You can start becoming outgoing with your best friends or a group of friends. But the real challenge（挑战）comes when you meet strange people. Smile more, and usually they will return your smile. In this way, you may have some more talks.

    Start a talk. Just a simple "Hello" or "How is it going” is a good start. If you want to make interesting talks, you should read news in the newspapers and prepare（准备）your views, or surf the Internet for new information and then keep that in mind.

    The easier way to become more outgoing is to go out. This is also the most important step. Go to a park, the beach, a club, a party or any other places that you think can be fun, and you may make new friends there.