急性肠套叠最有诊断意义的表现是（）。
A.腹痛
B.喷射状呕吐
C.黏液血液
D.腹部可触到腊肠样肿块
E.钡灌肠见杯口状阴影
参考答案：E
—The doctor told me _______ too much but I find it difficult.
—The doctor is right. The less you drink, _______ you will be. [ ]
A. don't drink; the healthier
B. not to drink; the healthier
C. not to drink; the more healthier
D. don't drink; healthier
下列不属于绿色食品产地环境质量标准（）
A、畜禽养殖用水标准
B、空气质量标准
C、土壤肥力标准
D、有毒有害标准
