— How long does it take us to go to your hometown from here?

— It takes us ________ hour to go to my hometown by ________ train.

A.an; a B.an; / C.an; the D.a; /

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When I was a little girl, my father loved to play catch (接球) with me. I wasn't very good at it, but we would play anyway. He was always telling me "Keep your eye on the ball" as I would not be able to catch even the easiest of throws.

As I got older, we didn't play catch as much. If I had a problem and would go to my father to ask for his advice, he would try to joke with me and say "Keep your eye on the ball". We would both laugh because usually that advice was not useful to the problem, but he would try to make me smile.

My father became ill in 1995 when I was 23. There weren't any more conversations, as he suffered from a stroke (中風(fēng)). He could not speak. He could only give mouth words, which were sometimes hard to understand. After a while, I seemed to be pretty good at reading at his lips (唇), even better than the nurses who were caring for him there.

During one of our last conversations, I was telling him about a problem I was having with my boyfriend. Once again, I could read his lips "Keep your eye on the ball." We both smiled.

That was the last time I saw my father before he passed away.

All these years later, when I get in trouble, I just tell myself "Keep your eye on the ball".

1.At first, by saying"keep your eye on the ball", the writer's father ________.

A.tells her to be careful while playing catch

B.wants to teach her a life lesson

C.wants her to work harder in every way

D.laughs at her when she misses the ball

2.When the writer asked for advice from her father, he usually ________.

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B.didn't care about her problem

C.joked with her and made her smile

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3.When in trouble, the writer tells herself "keep your eye on the ball" to ________.

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B.remember the old days with her father

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Different from common belief, blue light may not have a strong negative effect as people thought-according to the scientists from the University of Manchester.

It's known that our body clock measures brightness through melanopsin(黑素蛋白)，a specialized light sensitive protein in the eye. So there has been lots of interest in studying the influence of light on the body clock. Researchers changed the make-up of short and long wavelength light, which provided a small difference in brightness, as well as changes in color. Findings suggested blue light might be troublesome to our sleep patterns.

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