Do people in your country hug in the street? In some countries, it is common for people to show affection(亲密) in public places. In the United States, for example, we often see couples hold hands, hug and kiss on the street, in the park, in the restaurant and even on trains and buses. But in some other countries, people never show affection in public places because their customs don’t permit this, for example, in Korea and China. So, when Korean and Chinese people visit the United States, they sometimes feel very surprised when they see Americans hug and kiss on the street.
In some countries, friends show physical affection to each other. In some South American countries, female friends walk arm in arm when they walk along the street together. In Italy and Russia, male friends often kiss each other on both cheeks when they greet. In most countries, men don’t kiss or hug when they greet each other. They usually shake hands or pat each other on the back. People around the world are different in the amount, manner and situation in which they touch each other.
67. The main idea of this passage is ____.
A. the custom in Korea and China are exactly the same.
B. Koreans and Americans can never understand each other.
C. South Americans are more friendly than North Americans
D. Different countries permit different amounts of touching in public
68. Chinese and Korean feel surprised to see Americans hug and kiss on the street because ____.
A. they never hug or kiss
B. they themselves are polite
C. their own customs don’t permit such conduct
D. kissing each other is not allowed on the street
69. Which of the following is true according to the passage?
A. Chinese people often kiss on the street. 
B. In all countries public affection is permitted.
C. In many countries, men shake hands when they greet each other.
D. The Americans are not as polite as people in other countries.
70. From the passage we can guess____.
A. Korean people often kiss and hug on American streets
B. People all over the world like to kiss their friends
C. Americans like to kiss and hug Korean people on the street
D. It may be strange to Americans to see two men kiss on both cheeks.