-- I'm afraid I spilled coffee on the tablecloth.
-- _____
A. No, don't mention it.
B. That's good.
C. Oh, don't worry about it.
D. Oh, no, no.
第1题:
I’d rather you ________ make any comment on the issue for the time being.
A) don’t B) wouldn’t C) didn’t D) shouldn’t
选C
would rather that……"宁愿……",that从句中用过去时表示现在或将来要做的事。
第2题:
第3题:
下列程序段的时间复杂度为()。 for(i=0; i for(j=0; j c[i][j]=0; for(i=0; i for(j=0; j for(k=0; k c[i][j]=c[i][j]+a[i][k]*b[k][j];
A.O(m*n*t)
B.O(m+n+t)
C.O(m+n*t)
D.O(m*t+n)
第4题:
-- Ann is in hospital.
-- Oh, really? I __ know. I __ go and visit her.
A. didn’t; am going to B. don’t; would
C. don’t; will D. didn't; will
第5题:
下列程序段的时间复杂度是()。 for(i=0; i<m; i++) for(j=0; j<t; j++) c[i][j]=0; for(i=0; i<m; i++) for(j=0; j<t; j++) for(k=0; k<n; k++) c[i][j]=c[i][j]+a[i][k]*b[k][j];
A.O(m+n+t)
B.O(m+n*t)
C.O(m*t+n)
D.O(m*n*t)
第6题:
下列程序段的时间复杂度是()。 for(i=0;i<n;i++) for(j=0;j<m;j++) for(k=0;k<t;k++) c[i][j]=c[i][j]+a[i][k]*b[k][j];
A.O(m+n+t)
B.O(m*n*t)
C.O(m+n*t)
D.O(m*t+n)