考博英语训练营课后作业（8月24日）

Q1:The statistics in 2001 shows that the world life expectancy is 62.27 with the Japanese taking the lead to be 79.66 while China gaining a position surpassing all developing countries by its 69.98.

Q2:When there is a language barrier, communication is accomplished through sign language in which motions stand for letters, words, and ideas.