Every Chinese takes pride in our scientific （ 技术 ）， such as high﹣speed railway．
Yongshu Island is the farthest island off the （ 海岸 ） of the southern part of China．
保持健康对我们很重要．
It is very important for us healthy．
在某些方面，我和我妹妹完全不同．
In some ways， I am quite my sister．
Teenagers are old enough to look after （他们自己）．