根据括号中所给的汉语写出单词，使句子意思完整正确。

1. There is some ______ (水) in the bottle.

2. Mrs Jiang is good at ______ (唱) English songs.

3. Daniel is an active boy and he is crazy about playing ______ (足球).

4. The old man lives alone, but he doesn't feel ______ (孤独的) because he has many friends.

5. They wanted to remind us that we should protect the ______ (环境) by showing us the beauty of nature.

康明斯发动机上使用的温度传感器随着温度的升高其电阻的阻值（）。

A.升高

B.降低

C.不变

D.波动