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问题 单项选择题

利用三维表面成像、透明成像、多平面成像等技术进行产前诊断，可以（）。

A.清楚显示胎儿的形态，帮助判断有无畸形

B.测量正常胎儿脏器、肢体、骨骼不同时期体积，以观察胎儿生长发育的规律，评估其营养状况

C.测量胎儿实质脏器的大小、观察病变脏器体积与功能变化和病变发展的关系

D.以上各项均是

答案

参考答案：D

填空题

用所给词的正确形式填空。

1. How ________ (care) Jim was! He made few mistakes in the math competition.

2. —Who is your ________ (close) person in your family?  

    —My grandmother is.

3. He got a ________ (bad) result in English this term than last term, he didn’t try his best.

4. Tommy is very ________ (happy) because he lost his bike.

5. —Whose shoes are these?

    —They are the ________. (run)

6. The Greens will have a ________ (令人愉快的) trip because they plan everything carefully.

7. He does well in his geography, so he can answer the teacher's questions ________ (正确).

8. The ________(高度) of Millie is 135cm, I’m really sorry for it.

9. We can learn a lot from ________. They will take part in the important meeting tonight. (英雄)

10.The Great Wall is one of ________(著名) places of interest in Beijing.
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单项选择题

病例与对照的暴露资料均可在发病或死亡之前获得，暴露与疾病的先后顺序清楚，而且没有回忆偏倚；病例组与对照组可比性好，并且具有较高的检验效率。具有以上优点的病例对照研究是

A．病例对照不匹配研究

B．频数匹配病例对照研究

C．个体匹配病例对照研究

D．巢氏病例对照研究

E．病例队列研究
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