39________

1、十进制数39转换成无符号二进制整数是______。

十进制数39转换成无符号二进制整数是______。A100011B100101C10011lD100011

2、______________________________________

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3、39______.

39______.AhowBwhichCwhereDwhat

4、39_______

39_______A reasonableB suitableC obviousD perfect

5、39________

39________A itB suchC somethingD everybody

6、39．— _________ have you been learning

39．— _________ have you been learning English? ．—I have been learning English for six years．A How longB How oftenC How farD What time