题干
---Waiter! How soon can I get my food? I just have half an hour left before my train leaves.
---It be ready in five minutes.
---It be ready in five minutes.
A：may
B：should
C：could
D：need
答案(点此获取答案解析）
B
，经一段时间后，甲、乙两容器反应都达到平衡，下列说法中正确的是
