用于生长发育期需求增加和慢性失血而引起的贫血，宜选用的药物是（）。 A.叶酸 B.维

患儿男，3岁，因腭裂拟在全麻下行腭裂修补术。术前检查正常，地西泮、氯胺酮、琥珀胆碱麻醉诱导及气管插管顺利，术中吸入氟烷半小时后监测显示HR160次／分，气道阻力明显增大，术野血色变暗，患者全身肌肉强直，身体发热。

提问：患者出现上述症状的最可能原因？（）。

A.麻醉偏浅

B.过敏反应

C.输血反应

D.输液反应

E.恶性高热

F.支气管哮喘

阅读理解。

     If English means endless new words, difficult grammar and sometimes strange pronunciation, you are

wrong. Haven't you noticed that you have become smarter since you started to learn a language?

     According to a new study by a British university, learning a second language can lead to an increase in

your brain power. Researchers found that learning other languages changes grey matter. This is the area

of the brain which processes information. It is similar to the way that exercise builds muscles.

     The study also found the younger people learn a second language, the better the effect is.

     A team led by Dr Andrea Mechelli, from University College London, took a group of Britons who only

spoke English. They were compared with a group of "early bilinguals" who had learnt a second language

before the age of five, as well as a number of later learners.

     Scans showed that grey matter density (密度) in the brain was greater in bilinguals than in people without

a second language But the longer a person waited before mastering a new language, the smaller the difference

was.

     "Our findings suggest that the structure of the brain is changed by the experience of learning a second

language," said the scientists.

     It means that the change itself increases the ability to learn.

     Professor Dylan Vaughan Jones of the University of Wales, has researched the link between bilingualism

and maths skills. "Having two languages gives you two windows on the world and makes the brain more

flexible (灵活的)," he said. "You are actually going beyond language and have a better understanding of

different ideas."

     The findings were matched in a study of native Italian speakers who had learned English as a second

language between two and 34. Reading, writing, and comprehension were all tested. The results showed

that the younger they started to learn, the better. "Studying a language means you get an entrance to another

world," explained the scientists.

1. The main subject talked about in this passage is _____.

A. science on learning a second language

B. man's ability of learning a second language

C. findings that language learnings can help brain power

D. language learning and maths study

2. The last sentence of the second paragraph is intended to _____.

A. say language learning is also a kind of physical labor

B. prove that one needs more practice when he (she) is learning a language

C. show the importance of using it when you learn a language

D. make people believe language learning helps grey matter work well

3. We may know from the scientific findings that _____.

A. the earlier you start to learn a second language, the higher the grey matter density is

B. there is no difference between a later second language learner and one who doesn't know a second language C. the experience of learning a second language has bad effect on people's brain

D. the ability of learning a second language is changing all the time

4. The underlined word "bilinguals" probably means _____.

A. researchers on language learning

B. people who are good at learning foreign languages

C. people who can speak two languages

D. active language learners

人力资源评价包括那几个方面？

随机过程：依赖于与时间参量t变化的随机变量的总体（或集合），也可以看成是样本函数的总体或集合。

“南海一号”是一艘中国南宋初期，通过海上丝绸之路向外运送瓷器，而失事沉没于中国广东省阳江市南海海域的沉船。它将为复原海上丝绸之路的历史、陶瓷史提供极为难得的实物资料，甚至可以获得文献和陆上考古无法提供的信息。为了整体打捞“南海一号”，财政部审定9000万元专项资金，财政部拨款3000万元，剩余由地方财政补足。为了建造保存“南海一号”的“水晶宫”，有关部门已投入了1.5亿元。“南海一号”进“宫”后，预计博物馆每年的运营费用需要2000万元。这说明（）

A.文化与政治相互交融

B.经济发展是文化建设的基础

C.文化对经济具有反作用

D.经济发展了，文化也就发展了