问题
单项选择题
主动脉弓（）
A.续于升主动脉，呈弓形弯向左后方
B.凸侧有4大分支
C.自左心室起，呈弓形弯向左后方
D.凹侧有3大分支
E.发出左、右冠状动脉
答案
参考答案：A
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主动脉弓（）
A.续于升主动脉，呈弓形弯向左后方
B.凸侧有4大分支
C.自左心室起，呈弓形弯向左后方
D.凹侧有3大分支
E.发出左、右冠状动脉
参考答案：A
| 根据句意，用方框中所给单词的适当形式填空。 | |
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| 1. The actors gave us some _____ performances on the stage. 2. I hope you'll have a _____ holiday here. 3. The _____ golden silk dress made her more beautiful. 4. Do you know the Chinese _____ of the word "tour"? 5. Can you explain it more _____ ? 6. Don't smoke any more. It's _____ to your health. 7. It is too _____ here. I can't hear clearly what you are saying. 8. The _____ were so excited that they jumped up. |