流行的网络拓扑结构有：总线型结构、星型结构、环型结构、分布式结构以及()等。
If a person returns to his home country after a long enough visit to a host country, he may
A. obtain better abilities to adapt to a new environment.
B. regain some of the initial positive regard.
C. no longer live in small towns.
D. go through the four stages of cultural shock again.
According to the passage, Einstein represents the people who
A. change the future of the world through individual insights.
B. write simple essays to make abstract theories understandable.
C. end wars without using forces.
D. make breakthroughs to shape the course of history.
逆查法的特点是简单、全面、系统、细致，但工作量大、费时多，且抓不住重点，所以通常是在掌握情况发现线索后，在查找问题的细节以及发生的原因时采用。()
微信支付 
支付宝支付