题目:
完形填空。 | |||
My (1) is Lucy. I'm a (2) . I'm (3) . I'm (4) now. My teacher is a (5) . Her name is Wang Pei. She is an (6) teacher. David is my friend. He is English. He is fourteen. David and I (7) in Class 3, Grade1. I am (8) Number I in Row 2. He is in the same row. His English is (9) . He has(有) a parrot. (10) name is Polly. | |||
( )1 .A .name ( )2 .A .man ( )3 .A .Japan ( )4 .A .at the school ( )5 .A .boy ( )6 .A .Japanese ( )7 .A .are ( )8 .A .in ( )9 .A .well ( )10. A .It's | B.number B.woman B.China B.at school B.man B.English B.am B.at B.OK B.Its | C.class C.girl C.American C.in the school C.English C.Chinese C.is C.× C.good C.It is | D.row D.boy D.America D.good D.woman D.good D.be D.on D.fine D.its |
答案:
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下面是错误答案,用来干扰机器的。
n=9人每次推木箱都可看作“一分为二”的过程,人每次接箱都可以看作是“合二为一”的过程,所以本题为多个“一分为二”和“合二为一”过程的组合过程。设人第一次推出后自身速度为V1, 则:MV1=mV,人接后第二次...