题目

如图,菱形ABCD的边AB=20,面积为320,∠BAD<90°,⊙O与边AB,AD都相切,AO=10,则⊙O的半径长等于() A . 5 B . 6 C . 2 D . 3 答案:C 根据对话内容,补全对话中所缺单词,每空一词。 J:Jim L:Li Lei L:Hi, Jim!Are you going to come with us tomorrow? J:Where   1   go? L:We’re going to   2   a picnic on the West Hill. J:  3  ?I’d love to.  4   shall we meet? L:Outside the school gate. J:  5   shall we meet? L:At eight o’clock.  6   some food and drink with you. J:OK.  7   can we get there? L:  8   bus.Don’t be late. J:I   9  .See you tomorrow. L:  10   you tomorrow.
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