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【简答题】
选词填空. challenge, memorize, laugh at, voice, not... at all, native, make up, aloud, be afraid to, complete 1. I'm shy. I _____ speak in public now. 2. It's not polite _____ blind people. 3. I have difficulty in _____ so many new words. 4. He used to talk in a low _____. 5. It is a big _____ for me to speak in front of our classmates. 6. The teacher told us to _____ new sentences with the given new words. 7. Children can not speak _____ sentences before one year old. 8. He _____ like the book _____. 9. Every morning Tina reads English _____ to improve her studies. 10. Have you ever spoken to a_____ speaker?
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【单选题】设 a=-1 , b=2 ,下列逻辑表达式为真值的是 设a=-1,b=2,下列逻辑表达式为真值的是
A.
Not a >= 0 And b < 2
B.
a * b < -5 And a / b < -5
C.
a + b >= 0 Or Not a - b >= 0
D.
a = -2 * b Or a > 0 And b > 0
【单选题】组合逻辑电路设计步骤正确的是()
A.
给定逻辑问题-真值表-逻辑表达式-选器件-画逻辑图
B.
给定逻辑问题-真值表-选器件-逻辑表达式-画逻辑图
C.
给定逻辑问题-逻辑表达式-真值表-选器件-画逻辑图
【单选题】设有下列程序段: do while do while enddo exit enddo 则执行 exit 语句后,将执行 ( ) 。
A.
第 1 行
B.
第 2 行
C.
第 3 行的下一个语句
D.
第 5 行的下一个语句
【简答题】水准面是处处与铅垂线 的连续封闭曲面。A. 垂直
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