(1)83×338=83×278=9=3;
(2)18÷3-24=6-26=-6.
She went ____ a visit ____ her son in hospital. [ ]
A. on, at
B. on, to
C. to, at
D. out, at
(二)
分析该工程公司在具体的施工方法和过程是否妥当如不妥,请改正。