英语填空用SUCH AS

题目

英语填空用SUCH AS
Medical science has made many advances,yet there are still serious diseases that have not been conquered,____________.
Such inventions__________have contributed greatly to the progree of civilization.However,other inventions,_________,have threatened human existence.
There are certain times when i wish to be alone,_________when__________or when____________.
Some subjects have always been easy and enjoyable for me,________.However,other subjects,____________,__________.

答案

1,such as SARS
2,such as computer such as cloning
3,such as I was upset ,such as I was dispirited
4,such as maths make me happy
such as PE make me boring