-- I'm afraid I spilled coffee on the tablecloth.-- _____A. No, don't menti

题目

-- 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.

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相似问题和答案

第1题:

--Your phone number again? I _______ quite catch it.

A.don't

B.can't

C.couldn't

D.didn't


参考答案:D

第2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3题:

I’ve brought two babies with me. It’s really inconvenient for me to drive to the underground parking lot.

A.Don’t worry. I’ll take care of your babies while you’re driving to the underground parking lot.

B.Don’t worry. Someone will drive to the underground parking lot for you with little charge

C.I’m sorry. There is no vacancy right now

D.Don’t bother about it. We provide free valet service


正确答案:D

第4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)


C

第5题:

下列程序段的时间复杂度为()。for(i=0;i<m;i++)for(j=0;j<t;j++)e[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)

答案:A
解析:
在程序段中,有两段循环程序,第一段是一个双层嵌套循环,另一个是三层嵌套循环,所以基本操作是c[i][j]=c[i][j]+a[i][k]×b[k][j],此基本操作共执行m×t×n次。

第6题:

–– Host: Jack, come and sit in the sofa. Dinner will be ready in a minute. Could I get you something to drink?

–– Guest: ____.

A: No, don ’t trouble. I ’ve drunk enough

B: No, you couldn't. I'm not thirsty

C: Yes, you could. I ’d like some Coca cola

D: Yes, please. I'd like some Sprite


参考答案:D

第7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


正确答案:D

第8题:

Don’t write in the third person but don’t () “I”.

A.use

B.overuse

C.write

D.put


参考答案:B

第9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)


O(n^2)

第10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)


C