如图,四边形ABCD的四个顶点都在⊙O上,且AD∥BC,对角线AC与BC相交于点E,那么图中有_________对全等三角形;________对相似比不等于1的相似三角形.
She left （严格的） instructions in order not to be disturbed at meetings.
He said he （后悔） buying that book because his father had already bought one for him.
These （fisherman） homes are no longer in the boats because of the government's no fishing law on Yangtze River.
Put on your T﹣shirt and shorts. It's （hot） than yesterday.
You'd better ask other witnesses. I'm （certain） if the suspect was at the scene of the crime.
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