单词拼写。

     根据下列句子所给汉语意思，写出空缺处各单词的正确形式。

1. The plane crashed, killing all 200 people a________.

2. The government has promised to take _______(措施) to help the unemployed.

3. The _______ (大约的) number of children in the school is 3000.

4. Which companies was she _______(提到) to when she spoke of competing firms?

5. It was very _______(考虑周到的)of you to let us know you were going to be late.

在1000kg的空气(20℃，60%)中加入1000kJ的热量和2kg的水蒸气，则空气最终的状态参数为______。

A．焓值48.45kJ/kg

B．相对湿度100%

C．含湿量10.72g/kg

D．干球温度21℃