问题
单项选择题
“口服胆囊造影”，脂餐后胆囊正常收缩率为（）
A.不缩小
B.20%左右
C.40%左右
D.≥50%
E.以上都错误
答案
参考答案：D
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“口服胆囊造影”，脂餐后胆囊正常收缩率为（）
A.不缩小
B.20%左右
C.40%左右
D.≥50%
E.以上都错误
参考答案：D
| Choose the best response from A to F according to the sentences given. Each choice should be used only once. | |
| ( )1. Thank you for the gift. It's so nice. ( )2. Wish you good luck in the final exam! ( )3. My computer doesn't work. May I use yours? ( )4. Animals are our friends. We should protect them. ( )5. Remember to turn off the lights when you leave home. | |
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