题目

My name ______ Bill. I’m ______ English boy. I’m twelve. I’m a middle school student. Li Lei is my ______ . We’re in the same（相同的） class. Here is a photo ______ his family. Look, this is his ______ . He is a policeman(警察). His ______is an teacher. She is a good teacher. Li Lei has ______ sisters. ______ are twins(双胞胎). Their ______ are Fang Fang and Yuan Yuan. They have a cat(猫). We are good ______,too.【1】A.am B.is C.are D.call【2】A.a B.an C.\ D.the【3】A.father B.grandfather C.friend D.teacher【4】A.at B.in C.of D.for【5】A.parents B.mother C.grandpa细胞有丝分裂过程中，染色体、染色单体、DNA分子三者数量比为1∶2∶2时所处的分裂期应是（  ） A.前期和中期　　　　  B.中期和后期 C.后期和末期　　　　  D.前期和末期