实木镶板门、实木框架玻璃门与实木雕刻门的共同之处是门扇是由（）组成。
A.边梃
B.实木收口条
C.冒头
D.门芯板
E.实木板
参考答案：A, C, D
There was no sign _______ they had died from diseases such as bird flu - the main worry in such cases. Among the theories was _______ a truck had collided（碰撞）with the crowd.
A．/; that
B．that; that
C．that; which
D．that; /
下面哪一个图表示冰熔化过程的温度变化曲线？ [ ]
A.
B.
C.
D.
