已知φ200mm的铸铁轧辊，最大直径φ230mm，最小可用辊径为φ180mm，每次车

阅读下面文字，按要求完成①~②题。

　　百货大楼于元月10日上午10时将举行开奖仪式。这次开奖仪式在百货大楼举行，开出的是金奖。

　　在不改变原意、不增减内容的前提下把上面两个句子合成一个单句，并分别强调开奖重要性和开奖时间。

①强调开奖重要性：________________________________

②强调开奖时间：__________________________________

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Food is life. It gives us the nourishment we need to stay alive and be healthy. Usually, we eat because we are hungry or need energy. Brian Wansink, a professor at the University of Illinois, says we also eat certain foods because they make us feel good, and remind us of happy memories. Wansink calls this kind of food comfort food. For some people, ice cream is a comfort food. For others, a bowl of noodle soup makes them feel good.

How does a food become comfort food? Professor Wansink believes that we connect food with important times, feelings, and people in our lives. “ When I was a child, my mother made a delicious soup ; I loved it. Now, I often eat this soup when I am tired or worried, and it helps me feel better, ” says one of Wansink’s coworkers.

Do men and women choose different comfort foods? Wansink’s research at the University of Illinois says “yes.” In his study, the favorite comfort food for both men and women was ice cream. After this, men usually preferred hot, savory foods like soup or noodles. Women liked sweet things such as chocolate and cookies. Men and women like to eat comfort foods when they are happy, but women eat these foods more when they are sad or worried.

Not all comfort food is junk (垃圾) food. About 40 percent of the comfort foods in Wansink’s study were healthy main dishes or soups and vegetables. It shows, says Wansink, that a comfort food can taste good and be good for you.

54．The best title for the passage would be         .

A．How to Feel Good                    B．How to Keep Healthy

C．Healthy Foods Make You Feel Good  D．Comfort Foods Make You Feel Good

55．Which of the following is the favorite comfort food for men?

A．soup B．ice cream   C．noodles       D．cookies

56．We can infer from the passage that         .

A．your feeling is connected with what you eat

B．your feeling has nothing to do with what you eat

C．you will feel good if you have noodles

D．you will feel good if you have chocolate

57．The research done by Brian Wansink shows that          .

A．all comfort foods are good for health

B．all comfort foods have bad effects on health

C．women choose the same comfort foods as men

D．women eat more comfort foods when unhappy

关于气管壁的结构正确的是（）。

A.由粘膜、肌层和外膜三层组成

B.粘膜分为上皮和固有层

C.上皮内有杯状细胞

D.肌层内有少量骨骼肌

E.外膜有软骨环

在地震作用下框架柱可能形成塑性铰的区段，应设置箍筋加密区，使混凝土成为延性好的约束混凝土。

分馏塔有哪些不正常现象？原因是什么？