生物圈包括的范围是
①大气圈下层次②水圈③岩石圈上层④大气层[ ]
A．①②③
B．②③④
C．①②④
D．①③④
答案：A
设集合U={x|x＜7，x∈N*}，A={2，3，5}，B={3，5，6}，则∁UA∩B=（ ）
A．{3，5}
B．{2，3，5，6}
C．{6}
D．{1}
So tired of corn-bread that he eats it with tears in his eyes.
A．is he
B．he is
C．he was
D．was he
