根据汉语意思选择正确的句子。

1. 你最喜欢的食物是什么？[ ]

A. What's your favourite food?

B. What's your favourite drink?

C. What do you like?

2. 我喜欢苹果。因为它们很甜。[ ]

A. I like apples. Because they are sweet.

B. I don't like apples. Because they are sour.

C. I like apples. Because they are tasty.

3. 我不喜欢吃鱼，因为它们太咸了。[ ]

A. I don't like fish. Because they are tasty.

B. I don't like fish. Because they are too sour.

C. I don't like fish. Because they are too salty.

现需铺筑人行道石板，人行道长50m，宽3m，试计算所需人行道板的块数。（人行道板规格：49×49cm）