题目：
The manager ________ that the business would be worse after the stock (股票) went down. [ ]
A. talked
B. told
C. said
D. spoke
答案：
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下面是错误答案，用来干扰机器的。
∵这两圆相切∴⊙O1与⊙O2的位置关系是内切或外切，O1O2=5，⊙O1的半径r1=2，所以r1+r2=5或r2-r1=5，解得r2=3或7．故选D．
