請依下文回答第 16 題至第 20 題        Physical gestures and body language have different meanings in different cultures, and misunderstanding thesesignals can sometimes be embarrassing.   16   I had spent a lot of time among non-Americans, I had neverreally realized what this could mean in practical terms. I had an experience  17  me well, however. Some yearsago, I organized and accompanied a small group of visiting foreign students to New York for four days ofsightseeing by bus. Because these students were rather young, and because New York is such an overwhelmingcity, I was constantly counting heads    18    we hadn’t lost anyone. In the U.S., it is very common to count peopleor things    19   pointing the index finger and, of course, I used this method. One young man became extremelyquiet and    20   , and I thought that perhaps he wasn’t enjoying himself. When I asked him what was the matter,he replied, “In my country, we count people with our eyes. We use our fingers to count the pigs.”
【題組】16
(A) Actually
(B) Although
(C) Since
(D) Soon