①我国坚持宗教信仰自由政策
②宗教与科学并存是社会现实
③我国注重发挥宗教积极因素
④保护人权要求鼓励信仰宗教
A:①②
B:①③
C:②④
D:③④
The teacher tells us that ______ careful we are, ______ mistakes we will make.