After walking hurriedly for half an hour, I wanted to drink （）

A . 频谱 B . 接收灵敏度 C . 带宽

A . Don‘t worry. We‘ve got 20 minutes. B . Thank you. No hurry. C . Never mind. You go if you like. D . The lecture is useful.

A . 同频干扰 B . 互调干扰 C . 镜像干扰 D . 阻塞干扰

A . 热量扩散速度； B . 导热能力大小； C . 温度分布； D . 边界散热特性

A . F841：FOOO B . A019：8ACC C . CC8A：19AO D . 4DF8：OOFO

A . 交调干扰 B . 互调干扰 C . 镜像干扰 D . 中频干扰

错误 正确

A、If B、As C、Unless D、Because

A．A.mustn’t he B．B.isn’t he C．C.needn’t he D．D.doesn’t he

A.had to be B.would like C.feel like D.prefer to

A．others B．the other C．another D．each other

away, I was still learning my lines. I was having trouble dealing with my part-time job at the bank and my acting at night at the same time. As I walked, I thought seriously about giving up both acting and San Francisco. City life had become too much for me. As I walked down empty streets under tall buildings, I felt very small and cold. I began running, both to keep warm and to keep away from any possible robbers (抢劫犯). Very few people were still out except a few sad-looking homeless people under blankets. About a block from my apartment (公寓房间), I heard a sound behind me: I turned quickly, half expecting to see someone with a knife or a gun. The street was empty. All I saw was a shining streetlight. Still, the noise had made me nervous, so I started to run faster. Not until I reached my apartment building and unlocked the door did I realize what the noise had been. It had been my wallet falling to the sidewalk. Suddenly I wasn't cold or tired anymore. I ran out of the door and back to where I'd heard the noise. Although I searched the sidewalk anxiously for fifteen minutes, my wallet was nowhere to be found. Just as I was about to give up the search, I heard the garbage truck (垃圾车) pull up to the sidewalk next to me. When a voice called from the inside, "Lily Smith？" I thought I was dreaming. How could this man know my name？ The door opened, and out jumped a small red-haired man with an aroused look in his eyes. "Is this what you're looking for？" he asked, holding up a small square shape. It was nearly 3 a.m. by the time I got into bed. I wouldn't get much sleep that night, but I had gotten my wallet back. I also had gotten back some enjoyment of city life. I realized that the city couldn't be a bad place as long as people were willing to help each other. How did the writer feel when she was walking home after work？ A．Cold and sick. B．Fortunate and hopeful. C．Satisfied and cheerful. D．Disappointed and helpless.

A．电阻性 B．电感性 C．电容性 D．感抗性

A．across; across B．through; across C．across; through D．through; through