The earth _____________ around the sun. [ ]
A. moving
B. moves
C. moved
D. moveing
答案:B
There were two teachers named John ________at our school, which made some of our students _____.
A.working; confused
B.worked; confusing
C.work; confused
D.to work; confusing
短期内反复应用巴比妥类产生耐受性的主要原因是()
A.血浆蛋白结合率高,消除缓慢
B.神经组织对药物产生适应症
C.促进肝细胞葡萄糖醛酸转移酶的生成
D.诱导肝药酶加速自身代谢
E.以上均不是