阅读下面材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
Jonny: Hey! I'm just practicing Tai Chi(太极).Would you like to join me?
Peter: I know nothing about it. Is it difficult?
Jonny: It seems easy, but you need a lot of practice. You just follow me like this.
Peter: OK. Don't laugh 小题1: me. I may look funny.
Jonny: Bend your knees slightly and reach out your arms like tree branches, naturally and 小题2: (soft). Try to keep your body straight. Move slowly , then be sure to keep your balance and don't let your body shake.
Peter: I cannot control my body well. My legs become 小题3: (pain)
Jonny: Keep 小题4: (hold) your position for a while .It helps develop your strength and flexibility .Raise your leg and let 小题5: stay in the air for seconds.
Peter: I feel my legs shaking . I cannot do this any longer.
Jonny: Be patient! Tai Chi 小题6: (call)“shadow boxing" in English. It asks you to act like water: to be flexible as well 小题7: strong. In real competition, a Tai Chi master borrows the strength of the competitor and uses this energy to fight back. The 小题8: (hard) you try to beat him, the more likely you will get hit. He controls you!
Peter: Unbelievable! Oh..., 小题9: you don't mind, I'll stop and take a deep 小题10: .
即可得到虚线波形。 ①
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即可得到虚线波形。 ③
④
⑤
）T实线波形到达虚线波形，表明波的传播方向向左。 ⑥