题目内容：
请在第__(50)__处填上正确答案。
A．If you are feeling down, you normally don't sit straight, with your shoulders inwards. B．If you are pleased, you usually open your eyes wide and people can notice this.
C．Outgoing people generally ,use their arms with big movements, while quieter people keep them close to their bodies.
D．How you hold your arms shows how open and receptive you are to people you meet.
E．However, it will probably still be noticed, and people will know you're not pleased.
F．However, to be friendly in listening or speaking, you must move your head a little to one side.
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