改写英语句子,写的更加简洁,准确,informative（提供信息的）!

题目

改写英语句子,写的更加简洁,准确,informative（提供信息的）!
将下面18个句子改写的concise ,accurate,informative!必有积分重谢!
1,the high temperature had the effect of making the metal softer.
2,an investigation of all possible alternatives was undertaken.
3,three qualities of tungsten steel alloys are strength,ductility and they
have to be tough.
4,accidents can be either injury producing or can damage property.
5,there is a great deal to be explained in the area of unidentified flying objects
6,the aim of census analysis is to predict the expected population at some specified
future date.
7,the voltage must be definitely checked at periodical intervals.
8,the soldering proved to be of an unsatisfactory nature.
9,the use of this method would eliminate the problem of motor damage.
10,a scientist must obtain adequate evidence if he wants to prove a theory.
11,scientific instruments and machines frequently need to be adjusted before they are used
12,in the case of rad

答案

1.the temperature makes the metal softer2.an investigation was undertaken3,tungsten steel alloys are strong,ductile and tough.4,accidents can either produce injury or damage property.5,there is a grea...