密封程度越强，壳体材料强度越大，烟火药爆炸威力越大.
题型：判断题
问题：
密封程度越强，壳体材料强度越大，烟火药爆炸威力越大.
题型：判断题
补全对话 根据上下文的意思，把下列对话补充完整。（共5个小题，每小题1分）
A: 小题1:____________________________?
B: Yes, please. I want a sweater for my daughter.
A: Look! Here are some sweaters for girls.
小题2:____________________________?
B: Size M.
A: Do you like this red one?
B: Yes. My daughter likes red best.
小题3:________________________?
A: $25.
B 小题4:____________________.
Do you have any cheaper ones?
A: How about this one? It’s only$18.
B: Ok, I’ll take it. Here’s the money. 小题5:_________.
A: You’re welcome.