用所给词的适当形式填空。

                     for example , with , use , examine , more than , also , on, invent , health , should

         For     1    100 years , people's lives have been changed greatly by inventions.     2    , the X-ray machine

is a wonderful     3    in the medical field . It has made a great contribution to human      4     .     5     its help,

doctors can     6     the inside of their patients' bodies . It is    7     for discovering illnesses . But it     8     has

some bad effects    9     our health. So it      10      be used properly.

1.________ 2._________3._________ 4._________5. ________

6.________ 7. ________ 8. ________ 9._________10.________