题干
Don't ___________ the birds． Listen to the teacher carefully．
A：look
B：look out
C：look out of
D：look out at
答案(点此获取答案解析）
D
Don't ___________ the birds． Listen to the teacher carefully．
A：look
B：look out
C：look out of
D：look out at
2AB3（g）化学平衡状态的影响时，得到如下图所示的变化规律（图中T表示温度，n表示物质的量），根据图示得出的结论正确的是 （ ）