对不可药用的毒性药品，由单位领导审核后即可销毁。
参考答案：错
No one could _________ the failure of the experiment as everything went smoothly at first.
A．give an account for
B．account for
C．take account of
D．take into account
将4．6 g金属钠投入到95．6 g水中，得到的溶液溶质的质量分数是 ( )
A．4．6％
B．7．6％
C．8％
D．10％
