问题
多项选择题
* * 狭窄用金属 * * 探条行 * * 扩张以下哪几项是错误的（）
A.严格无菌操作
B.选用较细的金属 * * 探条
C.可用 * * 粘膜麻醉
D.一次扩张成功不必定期治疗
E.必要时扩张后留置导尿管
答案
参考答案：B, D
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* * 狭窄用金属 * * 探条行 * * 扩张以下哪几项是错误的（）
A.严格无菌操作
B.选用较细的金属 * * 探条
C.可用 * * 粘膜麻醉
D.一次扩张成功不必定期治疗
E.必要时扩张后留置导尿管
参考答案：B, D
Wolf was very hungry．No matter how hard he tried，he couldn’t catch anything to _______． Wolf met Dog on the road． “_______ are you going?” asked Wolf “I’m going to a wedding feast (宴会),” said Dog． “Would you like to come?” “Yes, I’m very ________ !” said Wolf． Dog said that Wolf could come with him, but he had to ________ to act like a dog while he was there． The two entered the wedding ______ and sat under the table, eating． Wolf ate and ate, and he got very ______. The people around them started to sing and dance． Wolf was so happy that he decided to ____. So he stuck his nose in the air and howled (嚎叫) a great loud wolf howl, “AAAAOOOOWWWW!!!!” All the music and dancing ________ and men began chasing and beating Wolf．He finally jumped _______ a window of the house and ran to hide in the forest．After that，wolves have made sure that they are far from ________ before they start to howl, and they don’t attend weddings any more．
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