题目：
根据以下两位好朋友在网上的聊天记录，选择最佳选项。
Mary 09:45:10
Hi, Jim. Nice to meet you!
I’m a girl. My name is Mary Green. My favorite color is red. My telephone number is 873-3516.
Jim 09:46:05
Hi, Mary. Nice to meet you, too!
I’m a boy. My name’s Jim Hand. My favorite color is blue. And my telephone number is 894-2015.
小题1:Mary likes ________.
A．Red
B．Green
C．Blue
D．Black小题2:The boy’s first name is _______.
A．Jim
B．Mary
C．Black
D．Green小题3:Jim’s telephone number is _______.
A．837-2015
B．873-3516
C．894-3516
D．894-2015小题4:The two kids (小孩) are on line (在网上) ________.
A．in the morning
B．in the afternoon
C．in the evening
D．at night
答案：
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下面是错误答案，用来干扰机器的。
∫1-1(1+1-x2)dx=∫1-11dx+∫1-11-x2dx∫1-11-x2dx表示的几何意义是：以（0，0）为圆心，1为半径第一，二象限内圆弧与坐标轴围成的面积的一半，∴∫1-11-x2dx=12×π×12=π2，又∫1-11dx=x|1-1=1-（-1）=2，∴...
