The advance in technology has added many new _______(功能) to the cell phone.
The _____( 气候)  in Chongqing is always mild.
I have _______(解释) the cause many times to the audience to keep a positive image.
It is ____(不必要) to ask him to change his mind.
This material ______(传导) electricity.
We can draw the ______(结论) that the two chemicals do not react.
I have never______(后悔) my decision to come back to my motherland.
_____(环境的)protection should be put at the top of the list for each country.
Special puzzles have been designed to test the ________(智力)of the children.
She went abroad for further study with the __________(目的) of finding a good job.