题目内容：

The medicinal reserchers are doing their best to fight bird flu.They think more of the public health care than _______.
A)they B)them C)themselves D)theirs

优质解答

大意 这些药学研究者们正在尽他们的最大努力和禽流感做斗争,他们考虑到公共卫生注意事项比自己还多 这里是要代指这些medicinal reserchers,所以选c themselves