-Areyouasoccerplayerinyourschool?-Yes,Itheteamtwoyearsago.Iintheteamfortwoyears.()A.havejoined;havebeenB.wasjoined;amC.joined;wasD.joined;havebeen
-Are you a soccer player in your school?
-Yes,I the team two years ago.I in the team for two years.( )
A. have joined; have been
B. was joined; am
C. joined; was
D. joined; have been
A.(C, B, D, A, P, E, I, J, G, H)B.(C, B, D, A, E, 2020-05-26 …
A.(C, B, D, A, F, E, I, J, G, H)B.(C, B, D, A, E, 2020-05-26 …
A.(B, F, G, J, A, E, D, I, C, H)B.(B, A, D, E, F, 2020-05-26 …
如图,AD∥BC,点E在的延长线上,CB=CE,试说明∠A=∠E. 2020-06-07 …
已知3阶矩阵A与三维向量x,使得向量组x,Ax,A2x线性无关,且满足A3x=3Ax-2A2x.( 2020-07-09 …
---Wouldyouliketogotothespacemuseum?---I’dloveto, 2020-07-09 …
六年级英语配对题A.Closeyourmouthandeatquietly.B.Shakehand 2020-07-25 …
已知全集I=N,集合A={x|x=2n,n∈N},B={x|x=4n,n∈N},则()A.I=A∪ 2020-07-30 …
如图所示扇形AOB中,∠AOB=90°,OA=OB=6,D为弧上一动点,过D作DE∥OA交OB于点 2020-07-30 …
设B是m×n矩阵,BBT可逆,A=E-BT(BBT)-1B,其中E是n阶单位矩阵.(1)证明:AT= 2020-11-03 …