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－－－Sorry, Professor Smith. I didn't finish the assignment yesterday. －－－Oh, you______
---Sorry, Professor Smith. I didn't finish the assignment yesterday.---Oh, you_______ have done it as yesterday was the deadline.A. mustB. mustn'tC.
－－－Do you want a lift home? －－－It’s very kind of you, but I have a much late in the of
---Do you want a lift home?---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock _______.
－－－ Hi, Terry, can I use your computer for a while this afternoon? －－－ Sorry. __ .
--- Hi, Terry, can I use your computer for a while this afternoon?--- Sorry. __ . A． It' s repairedB． It has been repairedC． It's being repairedD． It
－－－ Bill, can I get you anything to drink?－－－ ____. A. You are welcome B. No prob
--- Bill, can I get you anything to drink?--- ____. A． You are welcomeB． No problemC． I wouldn't mind a coffeeD． Doesn’t matter
请教汉语拼音高手“点”字的拼法.有两种观点,一是“d-i-an”；一是“d-ian”用文字表述就是：一是“的－衣－俺－点”；一是“的－眼－点”.哪种读法正确?
语文
请教汉语拼音专家“点”字的拼法.有两种观点,一是“d-i-an”；一是“d-ian”用文字表述就是：一是“的－衣－俺－点”；一是“的－眼－点”.哪种读法正确?
语文
复数z=－3（cos－isin（i是虚数单位）的三角形式是……（）A.3［cos（－）+isin（－）］B.3（cos+isin）C.3（cos+isin）D.3（cos－isin
数学
D.3（co
复数(2+i)/(1-2i)的共轭复数是＝(2＋i)（1＋2i）/（1－2i）（1＋2i）＝(2＋i＋4i＋2i×i)/(1＋4)＝5i/5＝i我算出的答案是i,可正确答案是-i哪里出错了吗?
数学
－Thirty-sixpeoplediedintheaccidentinShanghaionDecember31st.－.Weshouldkeepawayfromcrowdedplaces.A.I’mafraidnotB.It’simpossibleC.I’msorr
英语
d not B. It’s
一元三次方程求根公式盛金公式②的X(2,3)=(－2b＋Y⑴^(1/3)＋Y⑵^(1/3))/(6a)±i3^(1/2)(Y⑴^(1/3)－Y⑵^(1/3))/(6a)；的i3是什么意思?还有i²=-1如何将i代入式子?是i3
数学
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