问题 选择题 燃放鞭炮容易给人身和环境带来危害,禁止燃放鞭炮的标志是[ ]A.B.C.D. 答案 答案:B题目分析:A、图为禁止烟火标志,所以错误;B、图为禁止燃放鞭炮标志,所以正确;C、图为禁止烟火标志,所以错误;D、当心火灾---易燃物质标志,所以错误。故选:B. 阅读理解 阅读理解。 Some students often talk about their dream jobs. Betty wants to be a doctor because she thinks it'sdifficult but fun. Susan thinks (A) a nurse is an angel in white. So she wants to be a nurse. Alan wants a job for her. She likes making movies. She wants to be an actress like Gong Li. Tony likes talking to the people. (B) He hopes he can be a reporter. Oh, what does Anna want to be? She wants to be ateacher like Miss Cheng.1. 把(A)处划线句子翻译成汉语。 ___________________________________________ 2. 把(B)处划线句子改为同义句。 He hopes _____ ______ a reporter. 3. Why does Betty want to be a doctor? ___________________________________________ 4. What does Gong Li do? ___________________________________________ 5. 从文中找出本文的主题句。 ___________________________________________ 查看答案 单项选择题 比较选择控制是()A.用于对三个以上的输入信号进行比较,选择其中的最大信号或最小信号作为其输出的有效信号B.用于对四个输入信号进行比较,选择其中的最大信号或最小信号,作为其输出的有效控制信号C.用于对三个输入信号进行比较,选择其中的最大信号或最小信号作为其输出的有效控制信号D.用于对两个输入信号进行比较,选择其中的最大信号或最小信号作为其输出的有效控制信号 查看答案