题干
— The world is becoming smaller and smaller because of the Internet.
—___________.
A：No problem
B：Exactly
C：All right
D：That is all right
答案(点此获取答案解析）
B
— The world is becoming smaller and smaller because of the Internet.
—___________.
A：No problem
B：Exactly
C：All right
D：That is all right
2Z(g);正反应放热。从反应开始经过t1后达到平衡状态,t2时由于条件改变,平衡受到破坏,在t3时又达到平衡,据下图回答:从t2→t3的曲线变化是由哪种条件引起的（ ）