蛋白质变性时,不受影响的结构是 A.蛋白质一级结构 B.蛋白质二级结构 C.蛋白质三

题型:单项选择题

问题:

蛋白质变性时,不受影响的结构是

A.蛋白质一级结构
B.蛋白质二级结构
C.蛋白质三级结构
D.蛋白质四级结构
E.单个亚基结构

考点:临床执业医师临床执业医师
题型:单项选择题

Read the passage carefully. Then answer the questions or complete the statements in no more than ten words:

Just Ask Grandma

We read and hear a lot about healthy eating in newspapers and on TV nowadays. Experts and nutritionists tell us what to eat, when to eat and how to eat to stay healthy, Some of the their advice seems reasonable. Some just sounds strange. Who can we rely on?

Well, ask yourself another question: How did people choose foods and stay healthy before there were nutrition experts? We relied on culture, which is another way of saying: on tradition and common sense.

All of us carry around rules of thumb about eating that have been passed down in our families or plucked(采集) from culture. Earlier this year, US writer Michael Pollen posted a request about these rules on The New York Times website. Within days, he received more than 2,500 responses. Not all of them have stood the test of time or been confirmed by science, but all of them have something to teach us, Pollen said.

Here are some of Pollen’s favorites:

My parents are both from Italy, and one of our family rules was that you could not leave the table until you had finished your fruit. It was a great way to put fruit into our diets and also helped satiate(满足)our sweet tooth, keeping us away from less healthful sweets. – Marta C. Larusso

From my Romanian grandmother: “Breakfast, you should eat alone. Lunch, you should share with a friend. Dinner, give to your enemy.” – Irina A. Dumitrescu

Don’t eat anything that took more energy to ship than to grow. – Carrie Cizauskas

“It’s better to pay the grocer(食品商) than the doctor” was the saying that my Italian grandmother would frequently use to remind us of the love and attention to detail that went in to her cooking – John Forti

If you are not hungry enough to eat an apple, then you are not hungry. – Emma Fogt

“Make and take your own lunch to work.” My father has always done this, and so have I. It saves money and you know what you are eating. – Hope Donovan Rider

Never eat something that is pretending to be something else, e.g.: chocolate-flavor sauce that doesn’t contain chocolate. – Sonya Legg

小题1:Other than health experts, which other sources are there for us to turn to for advice on diet?

小题2:What does the underlined sentence imply?

小题3:According to Marta C. Larusso, we can both satiate our sweet tooth and keep away from less healthful sweets by_________________________________

小题4:What did John Forti’s grandmother mean when she said, “It’s better to pay the grocer than the doctor.”?

题型:单项选择题

女性,35岁,患肺结核已3年,治疗不规则,2天前受凉后发热,T38℃,体检无明显异常,胸片示两上肺片状阴影,伴不规则透亮区,为判断肺结核是否有活动,下列最有意义的是()

A.痰结核杆菌阳性

B.胸片上有空洞性病变

C.胸片上浸润性病灶

D.发热等结核中毒症状

E.血沉增高

题型:单项选择题

如何判断褶皱和断层的形成年代?

题型:单项选择题

患者,男,3岁,啼哭时可见腹股沟上段内侧由外上向内下前斜行突现一圆形囊性包块,平卧时可自行回纳。应首先考虑的是()

A.腹股沟直疝

B.腹股沟斜疝

C.股疝

D.脐疝

E.切口疝

题型:单项选择题

患者30岁,外阴瘙痒,白带增多。检查白带找到滴虫,不应选用以下哪种冲洗液作冲洗

A.2%~4%碳酸氢钠溶液
B.1%乳酸溶液
C.0.1%新洁尔灭溶液
D.1:5000高锰酸钾溶液
E.0.5%醋酸溶液

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