关于恶性溃疡下列正确的是()
A.溃疡形状不规则,一般较小
B.底部平坦,有黄白苔
C.周围皱襞规则
D.边缘呈结节状隆起
E.胃壁僵硬,蠕动快
参考答案:D
戴角膜接触镜可能导致的并发症有()
A.代谢性上皮损害
B.中毒性结膜炎
C.巨 * * 性结膜炎
D.棘阿米巴性角膜炎
E.角膜新生血管
18.______ everyone knows, John has made his promise to his parents ______ he will never play computer games again.
A.As; which
B.As; that
C.It; that
D.It; which