题目

如图是肾脏内部结构①②③依次分别为（   ） A ．皮质、髓质、肾盂    B ．髓质、皮质、肾盂 C ．髓质、肾盂、皮质    D ．皮质、肾盂、髓质 答案：D—Peter won the first prize in the English speech competition.—________. He did a good job.A.Congratulations to himB.You must be jokingC.You are welcomeD.It doesn’t matter