问题
单项选择题
密码学y=ax+b中,a有12种选择,b有26种选择,因此y=ax+b有312种变化,但其中()是无效的加密。
A、a=0,b=1
B、a=1,b=0
C、a=1,b=1
D、a=0,b=0
答案
参考答案:B
密码学y=ax+b中,a有12种选择,b有26种选择,因此y=ax+b有312种变化,但其中()是无效的加密。
A、a=0,b=1
B、a=1,b=0
C、a=1,b=1
D、a=0,b=0
参考答案:B
完形填空 | |||
We have many 1 . They are tomatoes, carrots 2 broccoli. Vegetables have many 3 . They are green, red, yellow and white. The green vegetables 4_ the best(最好的 ). We eat many green vegetables 5 . They are good for 6 . And they are 7 food. We can make(做) vegetable salad. I have lots 8 vegetable salad for breakfast. My sister Lucy 9 a baseball player. She likes 10 ,so she eats fruit salad. | |||
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