建筑火灾发展期是火势由小到大发展的阶段，这一阶段通常满足（）。
查看答案
下面，请回答 18～20 题。
第 18 题 Marco Polo came to China
A dog is a more demanding pet than a cat because＿＿＿．
Which of the following situations will cause the death of a child？
Which of the following is NOT true according to the passage？
微信支付 
支付宝支付