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I will never forget the year I was about twelve years old. My mother told us that we would not be _21_ Christmas gifts because there was not enough money. I felt sad and thought, “What would I say when the other kids asked what I’d 22 ” Just when I started to 23 that there would not be a Christmas that year, three women 24 at our house with gifts for all of us. For me they brought a doll. I felt such a sense of 25 that I would no longer have to be embarrassed when I returned to school. I wasn’t 26 . Somebody had thought 27 of me to bring me a gift.

I will never forget the year I was about twelve years old. My mother told us that we would not be _21_ Christmas gifts because there was not enough money. I felt sad and thought, “What would I say when the other kids asked what I’d 22 ” Just when I started to 23 that there would not be a Christmas that year, three women 24 at our house with gifts for all of us. For me they brought a doll. I felt such a sense of 25 that I would no longer have to be embarrassed when I returned to school. I wasn’t 26 . Somebody had thought 27 of me to bring me a gift.
题目:I will never forget the year I was about twelve years old. My mother told us that we would not be _21_ Christmas gifts because there was not enough money. I felt sad and thought……继续阅读 »

为了保障行驶安全,一种新型双门电动公交车安装了如下控制装置:只要有一扇门没有关紧,汽车就不能启动。如果规定:车门关紧时为“1”,未关紧时为“0”;当输出信号为“1”时,汽车可以正常启动行驶,当输出信号为“0”时,汽车不能启动。能正确表示该控制装置工作原理的逻辑门是

为了保障行驶安全,一种新型双门电动公交车安装了如下控制装置:只要有一扇门没有关紧,汽车就不能启动。如果规定:车门关紧时为“1”,未关紧时为“0”;当输出信号为“1”时,汽车可以正常启动行驶,当输出信号为“0”时,汽车不能启动。能正确表示该控制装置工作原理的逻辑门是
题目:为了保障行驶安全,一种新型双门电动公交车安装了如下控制装置:只要有一扇门没有关紧,汽车就不能启动。如果规定:车门关紧时为“1”,未关紧时为“0”;当输出信号为“1”时,汽车可以正常启动行驶,当输出信号为“0”时,汽车不能启动。能正确表示该控制装置工作原理的逻辑门是 A.与门 B.或门 C.非门 D.与非门 喵查答案:A 【答案】A。【解析】依据逻辑门电……继续阅读 »

如果给人注射灭活的甲型 流感病毒,可预防甲型 流感,那么灭活病毒在体内引起的免疫反应,正确的是

如果给人注射灭活的甲型 流感病毒,可预防甲型 流感,那么灭活病毒在体内引起的免疫反应,正确的是
题目:如果给人注射灭活的甲型 流感病毒,可预防甲型 流感,那么灭活病毒在体内引起的免疫反应,正确的是 A. B细胞接受刺激后形成效应B细胞,能使靶细胞裂解 B. T细胞接受刺激后形成效应T细胞,能释放淋巴因子 C. 吞噬细胞接受刺激后形成效应细胞,能产生相应的抗体 淋巴细胞吞噬该病毒后形成记忆细胞,能释放白细胞介素 喵查答案:B 效应B细胞不能使靶细胞裂解;……继续阅读 »