We have two rooms ______, but I can’t decide ______.

A．to live, to choose which one

B．lived, choose which one

C．to live in, which one to choose

D．live, which one

利用教师之章的专长或经验，以合作学习的方式，进行教学观察与回馈，达到教师共同成长的目的，这就是一种（）

A、自我反思

B、同伴互助

C、专业引领

D、少数有准