问题
选择题
下列电路中属于“与”逻辑电路的是（ ）
答案
答案：B
“与”逻辑电路为多个条件必须同时满足时才能出现某个结果。B中两开关必须同时闭合时灯才亮，为“与”逻辑电路，B对。
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下列电路中属于“与”逻辑电路的是（ ）
答案：B
“与”逻辑电路为多个条件必须同时满足时才能出现某个结果。B中两开关必须同时闭合时灯才亮，为“与”逻辑电路，B对。
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| Growing up in Australia, I wanted a pen friend. I was 13, had just started middle school and needed someone to talk to. So I went 1 all of the pen friend sites I could find on the Internet, 2 for any girl of my age from different countries. I 3 a Swede, an Italian, an American, a Finn, an Arab and an Egyptian, telling them about my family, my school and my 4 . Only one girl replied-the Egyptian. Her name was Noran Hussein. When Iopened my e-mail box and saw the reply, I was 5 . We started off by telling each other about our lives. 6 from the start I could tell that we shared the same interests. Step by step we 7_ up to discussing problems all over the world. People often ask if I’m afraid to ask Noran about certain things, like wearing the veil. I’m not. To me,asking questions is the first step towards understanding. If we stand back and only wonder, we start to 8 into problems. Noran and I are different, but we never say that 9 is wrong. I have learned more than I could ever hope to learn from a textbook. I wish people to experience what I have experienced-to learn that it is 10 to be different, not to be afraid of one another, to understand. | |||
| ( )1. A. through ( )2. A. asking ( )3. A. met ( )4. A. study ( )5. A. surprised ( )6. A. Right ( )7. A. held ( )8. A. fall ( )9. A. the other ( )10. A. nice | B. across B. waiting B. knew B. work B. happy B. Even B. worked B. step B. another B. OK | C. round C. looking C. called up C. city C. excited C. Ever C. went C. jump C. no one C. necessary | D. on D. reaching D. wrote to D. country D. nervous D. Only D. learned D. run D. either D. important |