31. I can’t give you answers __________, but I can look it up and give you the information later.
(A) off on the wrong foot
(B) off top of my head
(C) off the hook
(D) off the record

off the top of my head

文字上的意思是「只從我頭上」, 也就是「我一時想的」的意思, 但不是「一時之間記不起來」這句英文是口頭英文, 而非正式的(會話常用到, 但作文不能用).

1.

Eric: Hey W, can you remember how many times we've been to New York together?

Eric: 嘿, W, 你記不記得我們一起去過幾次紐約?

W: Off the top of my head, probably five times. But I can check on it.

W: 我(不用查)現在想, 應該五次吧. 我可以去查查看

2.

W: How many years have you been an accountant?

W: 你當多久會計師了呢?

J: Oh, fifteen years six months and twelve days.

J: 嗯, 十五年六個月又十二天

W: How did you manage to do that, just off the top of your head?

W: 你怎麼那麼利害, 難道你(不用想)直接就能算出來?

J: I am an accountant, we're good at counting

J: 我是個會計師, 我們都很會算數的