The young engineer sat down on a rock and rested his head in his hands. He would never get home; it was
36 . For weeks he had been
37 in the Northwest Canadian forest. Now there was a terrible
38 behind his eyes, and
39 of all, he had gone blind.
Suddenly a man
40 out of the woods, an Indian who had been hunting in the area. Seeing the engineer's
41 , he caught a fish in a nearby
42 and fed the sick man the
43 of the fish and some flesh from its head.
44 within a few hours the engineer's pain was
45 . A day later he could
46 again, and the next day he had
47 recovered.
When he returned home, the engineer told the
48 to Dr Price.
49 years later did it become a(n)
50 fact that this was just an everyday lifeguard doing its work. For what the engineer did, by eating fish eyes, was to
51 vitamin (维生素).
Vitamin A's biggest job is to keep the eyes
52 . Without Vitamin A, people and animals get night blindness and other eye problems. Without Vitamin A, people can even be totally blind. Vitamin A helps to keep the skin in good
53 . A also helps
54 bones and teeth and has something to do with proper
55 of blood cells.
| 小题1: | | A．hopeless | B．useless | C．careless | D．timeless |
|
| 小题2: | | A．lost | B．losing | C．hunting | D．working |
|
| 小题3: | | A．disaster | B．illness | C．pain | D．heat |
|
| 小题5: | | A．reached | B．appeared | C．hid | D．watched |
|
| 小题6: | | A．starvation | B．trouble | C．reality | D．situation |
|
| 小题7: | | A．pond | B．stream | C．place | D．sea |
|
| 小题9: | | A．Possibly | B．Immediately | C．Fortunately | D．Surprisingly |
|
| 小题10: | | A．gone | B．shown | C．settled | D．disappeared |
|
| 小题12: | | A．completely | B．naturally | C．partly | D．physically |
|
| 小题13: | | A．news | B．result | C．secret | D．story |
|
| 小题14: | | A．Unless | B．After | C．Not until | D．When |
|
| 小题15: | | A．recognized | B．accepted | C．solved | D．explained |
|
| 小题17: | | A．working | B．rolling | C．moving | D．going |
|
| 小题18: | | A．place | B．order | C．shape | D．sense |
|
| 小题20: | | A．type | B．growth | C．choice | D．size |
|
