He use of body language can be a powerful indicator of how you feel. This is often a conscious wa 
He use of body language can be a powerful indicator of how you feel. This is often a conscious way of 51 . Smiling shows you are happy; 52 your shoulders tells someone that you don’t know something or that you don’t 53 .and waving is a way of saying “hello” or “goodbye.” There are other gestures, 54 .which give information without you realizing it Crossing your arms may indicate that you are 55. bored or want to protect yourself; 56 your head might show you are puzzled; tapping your foot might mean you are feeling 57. and fidgeting might show you are nervous. Body language can sometimes get you into trouble when you travel 58 . Smiling is an almost 59 signal of pleasure or welcome, but other gestures may have different meanings in different cultures. The same gesture, used in different cultures can mean “OK,”“Zero,” “money” or something much more insulting! So when you talk to somebody next time, be 60 . Your body may be saying a lot more than you think!60________【正确答案】：careful
【题目解析】：So when you talk to somebody next time, be careful这句话的意思是说：所以当你下次和别人说话时，一定要多加注意。因此我们选择careful。