根据所给首字母或中文提示填空。

1.  The old man isn't feeling well today.  He is _____(仍然) ill in bed.

2.  It's warmer in the _____(南方的) part of China than in the northern part in winter.

3.   She is a _____(可爱的) girl.

4.  Can you speak in a l_____ voice? We can't hear what you are saying.

5.  What do you think is the most_____(无聊的)?

保护气流量是影响等离子弧压缩程度比较敏感的一个参数。( )