82.paint a picture of young people insecure about their future and deciding to do...

　　83.The book succeeded in doing a number of things,....

　　84.be quickly adopted by the media

　　85.It fails to take into account individual traits and differences between people of same age or background.

　　86.They are seen to share a general attitude.

　　87.Great strides have been made in science since 1950.

　　88.We had a very fruitful discussion in the classroom.

　　89.in urgent need of medical supplies///overshadow sth

　　90.There 's evidence to suggest that the onion has a high level of nutrition.

　　小编建议：学习贵在坚持，同学们可以每天选出几个句型背一背，再用这些句型练练笔，时间一长，相信同学们的写作的感觉就会培养出来的，这样在考雅思作文时也能应对自如了。