中药药效受肠道内微生态环境影响主要是指（）
A.肠道蠕动
B.肠道内pH
C.肠道内食物
D.肠道内菌群
E.肠道内水分
参考答案：D
—How do you like your college life?
—rrible．Not only ____less spare time, but ____myself even busier than before．
A．do I enjoy; do I find
B．I enjoy; I find
C．do I enjoy; I find
D．I enjoy; do I find
当昼夜平均气温低于（）或最低气温低于-3℃时，应采取保温措施，并按冬季施工处理.
A.5℃
B.3℃
C.0℃
