()1.A.Hello,Jack.()2.A.E-R-A-S-E-R.()3.A.Yes,itis.()4.A.Yes,hedoes.()5.A.History.B.Nicetomeetyou,too.B.Yes,Iam.B.No,itisn’t.B.No,shedoesn’t.B.Action
( )1. A. Hello, Jack. | B. Nice to meet you, too. B. Yes, I am. B. No, it isn’t. B. No, she doesn’t. B. Action movies. | C. How are you? C. Yes, I can. C. It is under the chair. C. I like them. C. Soccer. |
1-5 BACAC |
某质点A从时刻t=0开始沿某方向运动的位移为:S(t)=t3-6t2+9t(0≤t<4)t2-10 2020-05-13 …
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