莫尔法的依据是()原理。
参考答案:分级沉淀
—Would you like to go to the cinema with me?
—________. I love watching movies very much!
A.Yes, please
B.No, thanks
C.Yes, I’d love to
D.No, let’s go
通过粪便检查可确定哪种疾病()
A.消化道恶性肿瘤
B.消化道溃疡
C.肠道寄生虫
D.肝脏疾病
E.消化不良