题目

阅读下面短文，从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。 Body languageis known as the silent language of every culture. It can be the keyto 1 communication.We point a finger or move another part of the body to show what we want 2.It is important to know the body language of every country or we may 3. In the United States, people greet eachother with a handshake in a formal introduction. The handshake must be firm. Ifthe handshake is weak, it is considered 4 orunfriendly. Space is important to Americans. People in America usually standtw在数列1，1，2，3，5，8，x，21，34，55，…中，等于（   ） A．11               B．12               C．13               D．14