46. what is the writer's tone of the text?
1 manipulative
2 obstructive
3 uncooperative
4 argumentative
47. Which of the following would be the best title for this text?
1 DDT is still aroud-and still meance
2 where there is DDT, there is no malaria
3 get ride of DDT in order to save widlife
4 DDT contamination is a trivial threat everywhere