汗液中水分含量可达（）。
A.99%
B.95%
C.90%
D.85%
参考答案：A
Mr Zhang was in London ______1980 ______ 1983. [ ]
A. from; on
B. from; in
C. on; to
D. from; to
生活饮用水卫生许可制度的依据是什么？
