问题
单项选择题
冠心病心绞痛患者至少有一个冠状动脉的主支管腔显著狭窄达横截面积的（）
A.30%以上
B.50%以上
C.75%以上
D.90%以上
E.95%以上
答案
参考答案：C
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冠心病心绞痛患者至少有一个冠状动脉的主支管腔显著狭窄达横截面积的（）
A.30%以上
B.50%以上
C.75%以上
D.90%以上
E.95%以上
参考答案：C
| 从B栏中选择与A栏句子相应的对话。 |
| A ( ) 1. How many cats can you see? ( ) 2. Whose new bike is that? ( ) 3. Thank you very much. ( ) 4. What time is it? ( ) 5. What's wrong with you? ( ) 6. How old is she in the picture? ( ) 7. Where are your parents? ( ) 8. How do you do? ( ) 9. Let's get some flowers. ( ) 10. Are those trousers yours? | B A. I'm ill. B. Lingling's. C. Six. D. I can see three. E. That's all right. F. At home. G. How do you do? H. She's 6. I. No, they're hers. J. Please don't. |