题干
Doing eye exercises _______ well in _______ our eyesight.
A：do; protecting
B：does; protect
C：works; protecting
D：work; protect
答案(点此获取答案解析）
C
Doing eye exercises _______ well in _______ our eyesight.
A：do; protecting
B：does; protect
C：works; protecting
D：work; protect
、
为两条不重合的直线，
为两个不重合的平面，下列命题中正确命题的是
