除另有规定外，浓缩蜜丸中所含水分不得过（ ）
【单选题】
降结肠癌最早常见的临床表现是
A.
贫血，粘液血便
B.
恶心、呕吐
C.
大量频繁腹泻
D.
排便习惯改变
E.
左腹部触及肿块
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参考答案
参考解析
【单选题】
Only until very recently _________ possible that grammarians are able to make accurate statements about the rules of some languages.
has it been
it has been
was it
it was
【单选题】
When designing speaking tasks, we must follow the principles except ____.
maximum foreign talk
even participation
high motivation
high language level
【A1/A2型选择题】
某4个月患儿，人工喂养。近日反复出现发作性吸气困难，伴有吸气时喉鸣音，急诊入院，查血钙1.7mmol/L，其余正常。首先考虑该患儿出现了（ ）
中毒性肺炎
喉痉挛
气管异物
惊厥
支气管哮喘
