24． Nobody is in classroom because________ ．A． it’s SundayB． Mary gets to the classroom so earlyC．it's 7：30 nowD．the students are playing outside
24． Nobody is in classroom because________ ．
A． it’s Sunday
B． Mary gets to the classroom so early
C．it's 7：30 now
D．the students are playing outside
相关考题：
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以下程序includemain(){char a1[80],a2[80],*s1=a1,*s2=a2; gets(s1);gets(s2) if(!s 以下程序 #include＜string．h＞ main() { char a1[80]，a2[80]，*s1＝a1，*s2＝a2； gets(s1)；gets(s2) if(!strcmp(s1，s2))printf("*")； else printf("#")； printf("%d\n"，strlen(strcat(s1，s2)))； } 如果从键盘上输入： book＜回车＞ book＜空格＞＜回车＞ 则输出结果是( )A．*8B．#9C．#6D．*9
有定义语句“chars[10];”,若要从终端给S输入5个字符,错误的输入语句是( )。 A.gets( 有定义语句“chars[10]；”，若要从终端给S输入5个字符，错误的输入语句是（ ）。A.gets(＆s0)；B.scanf("％s"，s+1)；C.gets(s)；D.scanf("％s"，s[1])；
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AHer name is Mary． She comes from America． She is in China with her father and mother． She can speak a little Chinese． She studies in No． 80 Middle School in Tianjin．She is in the same school as her parents(father and mother)． She is a good student． She goes to school six days a week． She likes getting up early． She doesn’t like to be late．She often goes to school very early． But today she gets up late． So she gets to the classroom at 7：30． But there aren’t any students in it． She is not late． She is still early． It’s Sunday today． The students are all at home．( )21．Mary is from _______．A． AmericaB． ChinaC． No． 80 Middle SchoolD． Tianjin
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有两个字符数组a，b，则以下正确的输入语句是（）。A、gets（a，b）；B、scanf（“%s%s”，a，b）；C、scanf（“%s%s”，a，b）；D、gets（“a”），gets（“b”）；
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问答题Helen is twenty years old, and her age is four times as much as Mary’s. When Helen’s age is twice as much as Mary’s, how old is Helen then?
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