人体肠道正常菌群中占绝对优势的细菌是()
A.大肠埃希菌
B.无芽胞厌氧菌
C.链球菌
D.白色念珠菌
E.变形杆菌
参考答案:B
The hotel is almost finished, but it _____ needs one or two weeks to get ready for guests. [ ]
A. only
B. also
C. even
D. still
HS按( )设有品目。
A.产品的加工程度
B.产品的基本特征
C.产品的用途
D.以上都对