问题
多项选择题
特高频检测时应避免（）等无线信号的干扰。
A.手机
B.雷达
C.电动马达
D.照相机闪光灯
答案
参考答案：A, B, C, D
搜题请搜索小程序“爱下问搜题”
特高频检测时应避免（）等无线信号的干扰。
A.手机
B.雷达
C.电动马达
D.照相机闪光灯
参考答案：A, B, C, D
| 完形填空。 | ||||
| On the next-to-last day of school when I got on the bus I realized the tin (锡) heart a small girl gave me was gone. "Does anyone know what happened to the little 1 that was up here?" I asked. With 39 children, there was 2 . Later, one boy shouted, "Charlie was the first one on the 3 . I'm sure he took it." Other children 4 , "Yeah! Charlie did it! Search him!" I asked Charlie, "Have you 5 the heart?" "I don't know what you're talking about," he answered. "I'm sure he does!" 6 the girl who had given me the heart. "Check his 7 ." I asked him to come forward, then I 8 my hand into one pocket. Nothing. I reached into 9 . Then I felt it. I was about to pull the tin heart 10 Charlie's pocket when I stopped myself. Let him keep it, a 11 seemed to whisper in my ears. "It must have 12 before I got here," I said to them. "I'll 13 find it back at the bus stop." Without a word, Charlie returned to his 14 . That summer Charlie moved away. A dozen years later, I was in a department store in Kansas City, 15 someone said. "Polly?" I turned to see a man nearly 16 age. "Yes?" His face didn't look. 17 until I noticed his big gray eyes. There was no doubt. It was 18 . He told me he was living in Montana and doing well. Then, to my 19 , he hugged (拥抱) me. After he let go, he pulled something from his pocket and held it up for me to see-the little tin heart that 20 , "I love Polly and Polly loves me." "You were the only one who kept trying," he explained. We hugged again, and went our separate ways. | ||||
|