对婴儿来说,哪种氨基酸为必需氨基酸() A.组氨酸 B.胱氨酸 C.酪氨酸 D.精氨

题型:单项选择题

问题:

对婴儿来说,哪种氨基酸为必需氨基酸()

A.组氨酸

B.胱氨酸

C.酪氨酸

D.精氨酸

E.牛磺酸

考点:北京住院医师全科医学Ⅰ阶段儿科儿科题库
题型:单项选择题

咳嗽咽痒,咯痰不爽,或微有恶风发热,舌苔薄白,脉浮缓。治宜选用

A.小青龙汤

B.二陈汤

C.苓甘五味姜辛汤

D.止嗽散

E.苏子降气汤

题型:单项选择题

导游员在处理人际关系、特别是涉外关系中应该遵循的基本准则是()。

A.真诚公道,信誉第一

B.互相尊重,求同存异

C.热情友好,宾客至上

D.文明礼貌,优质服务

题型:单项选择题

In the early 1990s,the word” Internet” was strange to most people. But today, Internet has become a useful tool for people all over the world. Maybe Internet has been the greatest invention in the field of communication in the history of mankind(人类).

Communicating with others on the Internet is much faster. We can chat with a person who is sitting in the other part of the world. We can e-mail our friends and they can read the e-mails within a minute. Giving all kinds of information is probably the biggest advantage of the Internet. We can use search engines to find the information we need. Just type in a keyword or keywords and the search engine will give us a list of suitable websites to look at.

We can enjoy a lot on the Internet by downloading games, visiting chat rooms or surfing (浏览)websites. There are some games for free. We can meet new and interesting people in the chat now. We can also listen to music and see films.

Now ,there is a lot of service on the Internet such as online banking ,job finding and ticket buying. We can also do shopping and find nearly all kinds of goods. Sometimes we can find something that is quite good but very cheap.

小题1:How many main advantages of the Internet are talked about in the        passage?

A.Three.

B.Four.

C.Five.

D.Six.小题2:What fact doesn’t the passage provide?

A.We can find almost anything we want to know on the Internet.

B.Some games on the Internet are free.

C.We can buy most things we need on the Internet.

D.Goods on the Internet are more expensive than those in real shops.小题3:Which title best gives the main idea of the passage?

A.Online Shopping

B.Exchanging Information on the Internet

C.The Advantages of the Internet

D.Surfing the Websites on the Internet

题型:单项选择题

采气树由()、角式节流阀和采气四通组成。

A、闸阀

B、球阀

C、截止阀

D、节流阀

题型:单项选择题

某病的发病率指的是()

A.一定时期内,某人群中发生某病例的频率

B.一定时期内,某人群中发生某病新病例的频率

C.一定时期内,某人群中发生所有疾病新病例的频率

D.一定时期内,所有患病人数占总人口数的比例

E.以上均不正确

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