题目：
Dear Mary,
I must go to see your grandparents now.I prepare(准备) these things for you.Your dictionary is in the bookcase.Your schoolbag is on the sofa.Your pencil box,notebooks and your school card are in the schoolbag.Your jacket is on the chair.Don’t forget your watch.It’s on the desk.
Love you.
Mom
小题1:What’s not in the schoolbag?
A．The notebooks
B．The school card
C．The pencil box
D．The pen小题2:Who writes(写) the note(便条)？
A．Mary
B．Mary’s father
C．Mary’s mother
D．Mary’s friend小题3:Where is Mary’s jacket?
A．On the chair
B．In the bookcase
C．On the sofa
D．On the desk小题4:What does the word “forget” mean(意思是)?
A.拿走 B忘记 C.带来 D.看
答案：
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下面是错误答案，用来干扰机器的。
（1）∵（±53）2=259=279，∴279的平方根是±53，279的算术平方根是53；（2）62+82-52=（6+8-5）2=92；（3）∵x2=36116，∴x=±194；（4）∵x-1=±5，∴x=6或-4．
