选一选，根据提供的情景选择恰当的句子。

1. 当你想知道对方晚餐吃什么的时候，你应说： [ ]

A. What do you have for lunch?

B. What's your favourite food?

C. What do you have for dinner?

2. 当你想吃点面条时，你应说：[ ]

A. I'd like some noodles.

B. I like noodles.

C. My favourite food is noodles.

3. 当你想知道别人最喜欢吃什么水果时，你应说： [ ]

A. What's your favourite food?

B. What's your favourite fruit?

C. What would you like for lunch?

4. 该吃晚餐了，你应说：[ ]

A. It's time for dinner.

B. What time is it?

C. Let's go home.

5. 当你想表达“鱼太咸了”时，你应说：[ ]

A. The fish is too sour.

B. The fish is too salty.

C. The fish is too tasty.

煤尘爆炸，产生的一氧化碳浓度高达（）。

A、3%--4%

B、2%--3%

C、1%--1.5%

D、1.5%--2%