[交际用语]Doctor, I don't feel well. _______

[交际用语]Doctor, I don't feel well. _______

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离子交换树脂由于制造工艺的不同,使树脂内部形成不同的孔型结构,常见的产品有()树脂和()树脂。

离子交换树脂由于制造工艺的不同,使树脂内部形成不同的孔型结构,常见的产品有()树脂和()树脂。

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[交际用语]Good morning, John. How are you doing? __________A I’m pleased. B Good n

[交际用语]Good morning, John. How are you doing? __________A I’m pleased. B Good n

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[交际用语]How tall is your sister? _____________.A She’s not very tall. B She’s 28

[交际用语]How tall is your sister? _____________.A She’s not very tall. B She’s 28

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[交际用语]We are going to have a sing party tonight. Would you like to join us? ...

[交际用语]We are going to have a sing party tonight. Would you like to join us? ...

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