将下列单词排列成正确的句子。 

1. do   you   feel   how

                                                   ?

2. feel   tired   I 

                                                   .

3. have   I   headache   a  

                                                   .

4. the   matter   what's 

                                                   ?

5. toe   hurts   my

                                                   .

什么是超声波？它与一般声波有什么不同？