问题
单项选择题
先天性白内障最常见的类型是( )
A．前极性白内障
B．后极性白内障
C．胚胎核性白内障
D．绕核性白内障
E．全白内障
答案
参考答案：D
解析：绕核性白内障占先天性白内障的 50%，是最常见的类型。全白内障占 20%。
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先天性白内障最常见的类型是( )
A．前极性白内障
B．后极性白内障
C．胚胎核性白内障
D．绕核性白内障
E．全白内障
参考答案：D
解析：绕核性白内障占先天性白内障的 50%，是最常见的类型。全白内障占 20%。
| 阅读理解。根据短文内容，用简洁的句子或短语完成下列表格。 | ||||||||||||
| A Letter From Mars Dear Earthmen, I have enjoyed my stay on your interesting planet. I think I understand the life on earth now and I would like to give my impressions (印象). First of all you live in boxes. Every morning you leave your big boxes and get into smaller boxes on wheels (轮子). All these small boxes run around and around, and finally stop to rest. You leave these boxes on wheels a nd go to very large tall boxes. After resting all day you get back in your little boxes and return to your big boxes. There you sit and look at every small glowing (闪闪发光的) boxes with moving pictures on the front. There is only one thing I don't understand. I went to a football game one day. A group of angry boys fought a little round ball. Everyone shouted but they kept fighting. They were angry, because they had been kept in boxes all day. I think. Thanks you earthmen for this chance to get to know you. Yours The man from Mars | ||||||||||||
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