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问题 单项选择题 A2型题

世界各地华侨的鼻咽癌发病率均高于当地各民族的发病率，而且在国外出生的华侨也比当地人或其他民族的移民发病率高，如在夏威夷的华侨，非美国出生的华人鼻咽癌发病率为54／10万；在美国出生的华人为12.1110万；夏威夷本地人为1.8/10万；日本移民为1.4／10万；菲律宾移民为5.5／10万。说明引发华人华侨鼻咽癌高发的主要原因是（）

A.遗传因素

B.环境因素

C.遗传和环境交互作用

D.很难判断

E.与上述因素都无关

答案

参考答案：A

解析：移民流行病学研究应遵循下列原则：①若环境因素是引起发病率、死亡率差别的主要原因，则移民中该病的发病率及死亡率与原居住地人群的发病率或死亡率不同，而与移居地当地居民人群的发病率及死亡率接近；②若遗传因素主要是对发病率及死亡率起作用，则移民的发病率及死亡率不同于移居地，而与原居住地人群的频率相同。

单项选择题 A2型题

6个月女婴，呕吐、水样便2天，大便每天10次，高热1天，汗多、进食少、尿少、口渴。查体：烦躁不安，肢温，皮肤弹性差，心肺（-），膝反射亢进。补充累积损失量应首选（）

A.3：2：1液50～60ml／kg

B.4：3：2液50～60ml／kg

C.1／2张液60～80ml／kg

D.1／3张液60～80ml／kg

E.10％葡萄糖液60～80ml／kg
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                                                      STUDY CENTER COURSES
                                                        From Paragraph to Essay
     Of particular relevance to students who wish to improve their organizational skills and who feel that
their final product is never clear enough. 
                                                                                                                    Thursday 10:00-12:00 
                                                                                                                     Kiran Singh
                                                            Source Material
     How do you gather information for a project or paper?A practical course which looks at sources of
information and how to use cataloguing systems.
                                                                                                                      Monday10:00-11:00 
                                                                                                                      Kiran Singh
                                                            Express Yourself
     An advanced course suitable for students who are about to step into organizations where they may have
to voice their opinions often.
                                                                                                                       Monday 12: 00-2: 00
                                                                                                                       Dave Parrin
                                                        Dave Parrin Media Use
     Open to all students, this course focuses on many ways we can bene fit from the radio and television.
Group Projects form part o f course.
                                                                                                                      Tuesday 9: 00-11: 00
                                                                                                                      Steve Ansell
                                                             The Short Story
     A research into the world o,popular writers. One story is selected for adaptation into a short play and
group performance. Pre-arranged groups welcome. 
                                                                                                                        Thursday11:00-1:30
                                                                                                                        Mrs. Owen
                                                          Caught for Speeding
     Open to all students. Simple eye exercises to help you with speed reading. How to be selective on the
page. Using headings,topic sentences and paragraphs for easy access.
                                                                                                                     Wesnesday11:00-1:00
                                                                                                                      Mrs. Owen
                                                           Tense about Tenses
     For those who worry about their use of words-a look at tenses and other aspects of the language
through poetry and song. Good voice helps but not a must.
                                                                                                                      Saturday 10:00-12:00 
                                                                                                                      Steve Ansell
1. If a student takes the course The Short Story, he can't take _____.
[ ]
A. From Paragraph to Essay
B. Tense about Tenses
C. Source Material
D. Media Use
2. Which of the courses can develop the students' team work?
[ ]
A. From Paragraph to Essay.
B. The Short Story.
C. Caught for Speeding.
D. Express Yourself.
3. From where can a student read this?
[ ]
A. On the radio.
B. On television.
C. In a local newspaper.
D. On a school notice board.
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