问题补充:
Make sure that the machine is kept where it is not to children.
A. possible
B. common
C. accessible
D. Useful
答案:
A. possible
B. common
(答案→)C. accessible
D. Useful
解析:词义辨析题。确保把药品放在孩子够不到的地方。 A. possible 可能 B. common常见 C. accessible 可获得 D. Useful 有用根据语境选C