阅读下面短文,其中有十处空白,依据短文的内容在文中的空白处填上适合的字母,使之构成一个完整的单词。该单词的第一个字母已经给出。
Heart
The heart is really just a very strong pump. It has four valves1 made of vry thin, strong tissues2. If the damage to the h the help of the machine. He is very much alive. The heart-lung machine saves thousands of lives every year. Its really a wonderful invention!
参考答案:
1 heart 2 who 3 vein 4 body 5 lungs
6 blood 7 machine 8 cells 9 dead 10 with