That night we lay on the floor in the room and I listened to the silk-worms eating. The silk-worms     1    on shelves of mulberry (桑树) leaves and all night you could hear them eating and a dropping sound in the leaves. I myself didn't want to sleep because I had been living for a long time with the     2    that if I ever shut my eyes in the dark and let myself go, my     3    would go out of my body. I had been that way for a long time, ever since I was sleepless at night and felt it go out of me and go off and then     4    . I tried never to think about it, but it had started to go since, in the nights, just at the     5    of going off to sleep, and I could only stop it by a very great     6    . So while now I am fairly sure that it would not really have gone out, yet then, that summer, I was unwilling to make the     7   
    I had different ways of     8    myself while I lay awake. I would think of a trout (鳟鱼) stream I had fished along when I was a boy; and fish its whole length very carefully in my mind; fishing under all the logs, all the turns of the     9    the deep holes and the clear shallow stretches, sometimes     10    trout and sometimes losing them. I would stop fishing at noon to eat my lunch; sometimes on a log     11    the stream; sometimes on a high bank under a tree; and I always ate my lunch very slowly and     12    the stream below me while I ate. Often I ran out of bait (诱饵) because I would take ten     13    with me in a tobacco tin when I started. When I had used them all I had to find more worms and sometime it was very difficult digging in the bank of the stream     14    the cedar trees kept out the sun and there was no grass but only the     15    wet earth and often I could find no worms. Always I found some kind of bait, but one time in the swamp I could find no bait at all and had to cut up one of the trout I had caught and used him for bait. 
 
【正确答案】 B
【答案解析】 由上文中作者躺在地板上听蚕吃桑树叶的声音和下文中“you could hear them eating”可知,选B,feed意为“进食”。