18、
(A)additional 
(B)adventurous 
(C)familiar 
(D)logical

additional (a.)額外的、附加的

In these cases, the ...

學習一門外語使我們更容易與那個國家的人交...

額外 （B）冒險 （三）熟悉 （四）邏輯

16.Any foreigner in Taiwan will tell you that the most difficult part of adapting to culture shock is the language barrier. Everyday activities, such as ordering food and asking for directions, _____16_____ challenges for a newcomer. Problems in communication can _____17_____ frustration and, in some cases, anger. In these cases, the first forms of the language to be learned are usually abusive. This is unfortunate. Learning a foreign language makes it easier for us to communicate with people from that country, but we must become _____18_____ with the polite forms of that language. In English, people show courtesy by the use of three important features. First, people use sentence structures such as “Would you mind…?” Second, they can use different words. For example, they might say “Please be quiet.” _____19_____ the rude form “Shut up!” Finally, speakers use the _____20_____ of voice. In English, a rising tone can show politeness.

 Learning a foreign language makes it easier for us to communicate with people from that country, but we must become _____18_____ with the polite forms of thatlanguage. 

(克漏字翻譯+題目解釋)In these...