题干

有一只量程为1mA的电流表,给它并联一个0.01Ω的电阻,可将它改装成一个量程为0.6A的电流表.若要将这个量程为1mA的电流表,改装成一个量程为3V的电压表,则应该____联一个____Ω的电阻(精确到百分位).
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    One autumn morning, I spotted a pair of wild geese on our pond. The beautiful sight caught me by 1 because I'd never seen geese there before. Thinking they would soon leave, I 2 the chance to get close to them. I wondered where they came from and why they had chosen our pond.

    The next morning, the geese were still my 3 I walked round to the mailbox, showing them I meant no harm4I couldn't resist getting a 5 look. I hid behind some trees and 6 the handsome pair quietly through the branches. I was surprised to see they were staring at me, too!

    As days passed, I started 7 to them on my trips to the mailbox. They craned (伸长) their necks and raised their heads 8 but seemed to realize I was their friend. By then, my curiosity about 9 they were staying so long at the pond changed to10. As they were feeding in the grass the other day, I discovered the reason for their 11the male had a broken left wing. He couldn't 12 and his faithful mate wouldn't leave him behind. I asked a biologist what to do. He explained that sometimes a13 wing will heal by itself and suggested letting nature take its course.

    On the first day of November, I was working in the neighborhood of the geese with my tractor. As I bent to fasten a chain from the tractor, I 14some movement from the corner of my eye. Both geese were running towards the pond. Their wings were 15 like crazy, struggling for take off. Gradually, they flew over the pond. They16 enough altitude to fly past a neighbor's house, and then circled back towards me, flying no more than 50 feet over my head as if to say goodbye. Then they were out of my17.

    The season's first snowflakes fell the very next day. The birds must have 18 that winter was coming, and it was time to go. I became fond of them during their 19 visit to our pond, and now I miss them. I'll never forget their 20 to each other.