根据句子意思及首字母提示完成单词。

1. Candy is her favourite food, but it isn't h _____ food.

2. Daming can play table tennis but he can't play the p_____.

3. My parents live in Beijing. I often s_____ emails to them.

4. Tom usually plays basketball but he n_____ plays computer games.

5. We can download music from the I_____.

线材轧制时憋钢的主要原因有（）。

A.导卫安装问题

B.流钢线不正

C.红坯调整问题

D.劈头坏钢