试管婴儿是
A．人工授精B．配子输卵管内移植C．官腔配子移植D．体外受精与胚胎移植E．胚泡移植
参考答案：D
驾驶机动车碰撞建筑物、公共设施后可即行撤离现场。
—Do you know how the old couple spend their evening?
—They seem in front of the television. [ ]
A. content to sitting
B. to content to sit
C. content to sit
D. to content to sitting
