溃疡性结肠炎、克罗恩病（crohn）等常可见（）
A.鲜血便
B.柏油样便
C.米泔水样便
D.黏液脓血便
E.白陶土样便
参考答案：D
New digital mobile phones definitely produce less radiation, but that doesn’t ______ mean that they should be used without caution.
A．relatively
B．obviously
C．necessarily
D．generally
汉莫拉比法典被发现于哪个国家（）。
A.古罗马
B.古埃及
C.古印度
D.古巴比伦
