下列的关系式错误是（） A: T（i，j）=T（j）-t B: T（i，j）=T（i） C: T（i，j）=T（i） D: R（i，j）=T（i，j）-T（i，j）

工序（i，j）的最早开工时间R（i，j）等于（） A: T（j）-T（i）+t B: T（i，j）-T（i，j） C: T（i，j）-T（i，j） D: T（j）-T（i）-t

Complete the sentence.Měinián de 520 tèbié shìhé xiàng nǐ xǐhuān de rén_________.每年的520特别适合向你喜欢的人________。 A: xīyǐn吸引 B: shuōhuà说话 C: biǎoshì表示 D: biǎobái表白

I must answer the letter,_____? A: shouldn’t I B: wouldn’t I C: mustn’t I D: didn’t I

I had to tell the truth, ______ A: didn't I B: wouldn't I C: hadn't I D: shouldn't I

I had to tell the truth, ________? A: hadn’t I B: wouldn’t I C: didn’t I D: shouldn’t I

对于文法G(E): E®T|E+T T®F|T*F F®(E)|i句型(E) *i对应的最右推导 A: EÞTÞT*FÞF*FÞF*iÞ(E) *i B: EÞTÞT*FÞT*iÞF*iÞ(E) *i C: EÞTÞT*FÞF*FÞ(E)*i D: EÞTÞT*FÞ(E)*FÞ(E)*i

-Don’t forget to come to my birthday party. -( ) A: I don’t B: I won’t C: I can’t D: I haven’t

I had to tell the truth, ______ A: A) didn't I B: B) wouldn't I C: C) hadn't I D: D) shouldn't I

— Don’t forget to come to my birthday party tomorrow.— ________. A: I don't B: I won't C: I can't D: I haven't