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【单选题】
腹股沟斜疝发生嵌顿的主要原因是A.
疝环小，疝内容物有粘连
B.
疝环小，腹内压骤然增加
C.
疝环大、疝内容物脱出较多
D.
腹壁肌肉紧张收缩内环
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【简答题】Do you still get free plastic bags（塑料袋） from the supermarket（超市）? Things will change soon. To protect(保护) the environment, supermarkets in China will stop providing (提供) free plastic bags after June 1...
【简答题】请根据课堂所学内容完成营销策划书的撰写
【单选题】What kind of bags do you put your goods in,renewable or no renewable?
A.
Renewable
B.
Nonrenewable
【单选题】A：Is this the right counter to check in for this flight?B：————————A：Here you are. Oh, I'd like an aisle seat please.B：One moment, please.
A.
Yes, your passport and ticket please.
B.
Yes. What kind of seat do you want?
C.
Yes. How many bags do you have to check in?
D.
No, the counter for your flight is over there.
【简答题】根据对话内容判断正（T）误（F）。 S: Excuse me. do you have any bags? C: Yes. What kind do you need? The big one? S: Yes, how much is it? C: It is 50 dollars. S: Oh, it's too dear! C: How about the small one? It is c...
【简答题】=（ ）％=5∶8= =1÷（ ）。
【简答题】计算：（1）（﹣8）+（+5）=（ ）；（2）（﹣15）÷（﹣5）=（ ）．
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