GIẢI THÍCH ĐÁP ÁN GIÚP MÌNH VỚI Ạ, MÌNH CẢM ƠN NHIỀU 

Today, in many parts of the world, it is customary for people to shake hands upon meeting as gesture of good will. Originally, however, the practice of shaking hands had more practical purposes.
Shaking hands originated in medieval times. In those days, when a man came on a stranger, he would often automatically reach for his sword with his right hand, in case he had to use the weapon to defend himself. Sometimes, both parties found themselves circling around each other, weapons in hand, until it was mutually agreed that the weapons could be laid aside. Then the two parties extended their right hands to show they had no weapons, and clasped them. This was the beginning of the handshake.
The custom of shaking hands is not a universal one. In the orient, people have for centuries, clasped their own in front of them upon meeting to show that they held no weapons. In France, a custom developed in which people who met would kiss each other on both cheeks. The natives of some South Seas islands greet by rubbing noses. Note: clasp (v): nắm chặt, siết chặt.
28. At first the purpose of shaking hands was _________.
A. to show a good relationship with each other B. to show that there were no weapons in hands
C. to show that both parties were ready for fight D. a gesture of good will
29. To show that one has no intention to fight _________.
A. shaking hands has been practised all over the world B. the oriental people kiss each other’s hand.
C. people laid aside their weapons D. there have been various ways depending on different cultures
30. According to the passage, the practice of shaking hands _________.
A. was used to extend greetings B. used to be popular, but now it is out of date
C. is replaced by other customs in some countries D. is considered not to be polite
31. The word “came on” in the second paragraph can be best replaced by _________.
A. waited for B. visited C. attacked D. happened to meet
32. Which of the following is not true about the handshake?
A. It happened for the first time very long time ago. B. It is a gesture of good will.
C. It Is very popular all over the world D. It Is one of the social customs.