该患儿应实行的隔离标志是
A．黄色B．橙色C．蓝色D．绿色E．色
参考答案：C
One day, news came ____ Britain’s old king had died without a son.
A．what
B．that
C．which
D．how
一户果农，计划种植252棵苹果树，头两天植树56棵，照这种速度，剩下的树还要多少天才能植完？
