设int a；float b；char c；long d；double e；，则表达_爱下问搜题

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问题填空题

设int a；float b；char c；long d；double e；，则表达式a/c-b+d-e值的类型是______。

答案

参考答案：双精度或者double

选择题

对于某个导体电阻的大小，以下说法正确的是[ ]

A．加在导体两端的电压增大两倍，导体的电阻也增大两倍

B．通过导体的电流减小一半，则导体的电阻增大两倍

C．当导体的电压和通过导体的电流为零时，导体的电阻为零

D．电阻是导体本身的一种性质，与电压和电流无关

完形填空

When I came to my new school three years ago, I was surprised at how lonely I felt. Then one of my classmates invited me to her house for a dinner 36 . I was a little anxious, but finally I gladly 37.
Not really knowing how 38 the bus ride should be, I 39 when I saw the landmarks 40 on my friend’s hand-drawn map. But when I got close enough to the 41 , I found none of the streets were shown on the map. I was 42 on a busy road with cars driving past without a person in sight. I had no43 when the next bus would come, 44 when a bus did come by, I 45 got on. I told the bus driver where I wanted to go and he said that I had caught the 46 bus, but he let me stay on. After he had finished his scheduled bus route, he 47 to help me out. I gratefully showed him my little hand-drawn map but 48 did not help much.
He finally 49 me off at a main road to catch a different bus and was 50 that he could not help me more. After a few minutes of walking, I noticed a bus pull up beside me. It was the 51 bus driver. He explained that he didn’t want to leave me there 52 . He sent out a call and someone radioed back, saying that the bus I needed to catch was about ten minutes away. At last I made it to the dinner party 53 I was over an hour late.
I am forever thankful for the 54 that this bus driver had for me. His act of kindness left a 55 on my heart.

B．walked away

A．street signs

B．tall buildings

C．traffic lights

D．disappointed

C．unaccompanied