题目

阅读短文，选择正确的答案。 It is 4:30 in the afternoon. School is over.Some children are in the playground. Look! Lily and Jenny are talking under thetree. Sam, Bob and Amy are playing a game. Frank and Jill want to join them.Sam says, OK. Please take turns. Look at the girl near the garden.She is Kate. She is reading a book quietly. （1） It is _________. A . in the morning B . in the afternoon C . 4:40 （2） Lily and Jenny are . A . sitting under the tree B . talking in the library C . talking under the tree （3） Sam, Bob and Amy are . A .如图，BD是⊙O的直径，点A在BD的延长线上，AC切⊙O于点C，∠A=30°，则∠B=（　　） A、60°B、30°C、15°D、45°