以下估测值最接近实际的是( ) A.一元硬币的直径约2cm B.人的正常体温是3

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问题:

以下估测值最接近实际的是(  )

A.一元硬币的直径约2cm

B.人的正常体温是39℃

C.一个苹果的质量约2kg

D.人步行的速度约10m/s

考点:温度的概念质量的估测速度及其单位换算长度的估测
题型:选择题

精益六西格玛项目结案后至少向后追溯()月.

A.12

B.10

C.24

D.6

题型:选择题

His eyes       from the book . He stared at the wall and then went back to reading for a little.

A.mixed

B.sought

C.carried

D.wandered.

题型:选择题

藏书保护的内容与方法有哪些?

题型:选择题

At the moment our technology is more advanced than theirs, but they are()fast.

 A.catching up

B.catching on

C.catching at

D.catching out

题型:选择题

When I was growing up, I was embarrassed to be seen with my father. He (1) severely crippled and very short, and when we would walk together, his hand on my arm (2) balance, people would stare. I would inwardly be afraid (3) squirm at the unwanted attention. If he ever noticed or was bothered, he never let (4) .
It was difficult to coordinate (5) steps - his halting, mine impatient - and because of that, we didn’t say much as we went along. But as we started out, he always said, "You (6) the pace. I will try to adjust to you. "
Our usual walk was to or (7) the subway, which was how he got to (8) . He went to work sick, and (9) nasty weather. He almost never missed a day, and would (10) it to the office even if (11) could not: a matter of pride!
He never talked about himself as an object of pity, (12) did he show any envy of the more fortunate or able. What he looked for in others was a "good heart", and if he found one, the owner was good enough for him.
Now that I am older, I believe that is a proper standard (13) which to judge people, even though I still don’t know precisely (14) a "good heart" is. But I know the times I don’t have one myself.
He has (15) gone many years now, but I think (16) him often. I wonder if he sensed my reluctance to be seen with him during our (17) . If he did, I am (18) I never told him how sorry I was, how unworthy I was, how I regretted it. I think of him when I complain about trifles, when I am (19) of another’s good fortune, when I don’t have a "good heart".
At such times I put my hand on his arm to regain my (20) , and say, "You set the pace, I will try to adjust to you.\

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