取字符串s的倒数第i个字符，正确的表达式是（ ）。 A: Mid(s,i,1) B: Mid(s,Len(s)-i,1) C: Mid(s,Len(s)-i-1,1) D: Mid(s,Len(s)-i+1,1)

设S="中华人民共和国",表达式Left(S,1)+Right(S,1)+Mid(S,3,2)的值为()

The Mid­Autumn Festival dating back in China’s Tang Dynasty．

已知三阶矩阵$A$满足$\mid A-E\mid=\mid A-2E\mid=\mid A-3E\mid=0$，则$\mid A\mid$=( )。 A: $4$ B: $6$ C: $12$ D: $3$

By the late 1980’s Hip-hop had become more popular than rock music in America.

By the mid-1980s, for instance, powering dressing was characterized by ______________, _______________ and knee-length. This style is the favorite of the newly-empowered women.

The acronym “MICE” came into being in the mid 1990s, it's fully recognized that the term MICE relates to meetings,______ ,______ ,______ .

设$A,B$是$n$阶正交矩阵，且$\mid A\mid=-\mid B\mid$，则( ). A: $A+B$可逆 B: $A+B$不可逆 C: $\mid A+B\mid=1$ D: $\mid A+B\mid=-1$

【单选题】有以下定义和语句 struct workers { int num;char name[20];char c; struct{int day; int month; int year; } s; } ; struct workers w,*pw; pw=&w; 能给 w 中 year 成员赋 1980 的语句是 () A. (*pw).s.year=1980; B. w.year=1980; C. pw‐>year=1980; D. pw.s.year=1980;

The special-effects revolution began in the mid-1980s with Star Wars. A: Right B: Wrong C: Not mentioned