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【简答题】
根据对话内容,从方框中选出能填入空白处的最佳选项,其中有两项多余。 A. I am going shopping this afternoon. B. You can do it later. C. Could I invite some of my friends to our home ? D. Could you give me some money ? E. By the way , could you please clean your room now ? F. What snacks do you want ? G. I don't have any pocket money ( 零用钱 ) with me now. A: Mom , tomorrow is my fourteenth birthday. 1.______ B: Sure , you can.
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【单选题】We are sorry to inform you that this item is _____ at the moment.
A.
on stock
B.
out off stock
C.
in stock
D.
out of stock
【简答题】to officially stop sth. from continuing, esp for a short time s_______________
【单选题】Since you are a little tired, you had better ________ a rest.
A.
to stop to have
B.
stop to have
C.
to stop having
D.
stop having
【简答题】在过点【图片】和【图片】的曲线簇【图片】中，当【图片】（ ）时，沿着该曲线从【图片】到【图片】的积分【图片】的值为最小.
【简答题】蛋白质在高离子强度的溶液中溶解度降低,从而从溶液中沉淀出来的现象称为 ________ 。主要分为 ____________ 和 ____________ 。蛋白质盐析时, pH 值尽量在 ________ 附近。
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