外研版（2019）高中英语必修1：Unit 1 A new start 单元过关测试

1）时间；

2）活动安排；

3）欢迎他表演节目。

注意：

1）词数100左右；

2）可以适当增加细节，以使行文连贯。

Screen time before bedtime may leave people feeling sleepy in the morning. Cell phones, computers and TVs emit (发出) blue light. And exposure to that bluish light during the two hours before bed can keep us from getting a good night's rest, a new study finds. It cuts down on the length of people's sleep. It also leaves them feeling tired in the morning and can disrupt the body clock. Data shows that this blue light tends to make us more alert at night, making it harder to get all the rest we need.

Green and his team surveyed 19 people — all in their 20s — for a sleep study. All spent two hours on a computer right before bedtime. But they didn't all experience the same light exposure. Looking at screens that gave off intense blue light cut someone's sleep by about 16 minutes, compared to when they had used screens with red light. Those exposed to blue light also woke up more often at night than if they had been exposed to red light.

"The normal blue light emissions from the computer screen also affect how much melatonin (褪黑素) each volunteer makes. It is released into our blood around 9 p. m. When our bodies make less melatonin, we may still feel too alert at bedtime to fall asleep when the body is tired. And body temperature won't drop as expected after we use devices emitting lots of blue light. Using screens before bed damages the body's biological clock," Green says. "More and more kids are using screens nowadays. Sleep is important, especially during the first few years of life when 'neural plasticity' (神经可塑性) is at its greatest. Their brains are still developing the ability to learn and pay attention. That makes the new results worrisome," Green says.

Rahman says that the new work makes a good point about how blue light from screens can be bad for our bodies. However, he points out, the light in this study is extremely bright. It is far brighter than what a normal computer, tablet or TV will emit. Still, Rahman says the results remind us to think about how we should use screens before bed.

In our twenties, we find it funny when we can't remember our neighbor's cat's name or that handsome actor who starred in that movie — whatever it was called. In our thirties, we jokingly call it "brain freeze". In our forties, we laugh it off as a "senior moment" and follow up with one of these old­age jokes. But the reality is that there comes a point when being forgetful stops being funny and starts to seem a bit dreadful. You think, "Am I losing it?" Or worse, "Is this a sign of Alzheimer's disease (老年痴呆症)?"

Well, don't worry: the fact that you recognize your own forgetfulness may be a very good sign, at least in terms of the possibility of your developing Alzheimer's disease. A new study shows that it's not forgetfulness but not being aware that we're forgetful that we should fear.

The researchers began with the assumption that one common feature of Alzheimer's disease (AD) is a damaged awareness of illness. And they wanted to prove their theory that the lack of awareness can be used to predict whether someone with "mild cognitive (认知的) damage" will progress to full­on AD. For the study, "mild cognitive damage" was defined as someone whose mental state was considered healthy but who had either complained of memory loss or had suffered objective memory loss.

The researchers used existing data for 1,062 people between the ages of 55 and 90 that had been recorded over a 12­year period. The data included brain scans, which the researchers used to look for visual signs of reduced glucose uptake (葡萄糖摄入). It is an objective marker of the sort of reduced brain function that goes along with AD. As expected, glucose uptake was reduced in those with AD. What the researchers also discovered was that glucose uptake was reduced in those with mild cognitive damage who also showed evidence of reduced illness awareness. Finally, the researchers found that those who had reduced illness awareness were more likely to develop AD than those without.

When I was in the fourth grade, I worked part-time as a paper boy. Mrs. Stanley was one of my customers. She'd watch me coming down her street, and by the time I'd biked up to her doorstep, there would be a cold drink waiting. I'd sit and drink while she talked.

Mrs. Stanley talked mostly about her dead husband. "Mr. Stanley and I went shopping this morning," she'd say. The first time she said that, soda (汽水) went up my nose.

I told my father how Mrs. Stanley talked as if Mr. Stanley were still alive. Dad said she was probably lonely, and that I ought to sit and listen and nod my head and smile, and maybe she'd work it out of her system. So that's what I did, and it turned out Dad was right. After a while she seemed content to leave her husband over at the cemetery (墓地).

I finally quit delivering newspapers and didn't see Mrs. Stanley for several years. Then we crossed paths at a church fund-raiser(募捐活动). She was spooning mashed potatoes and looking happy. Four years before, she'd offer her paper boy a drink to have someone to talk with. Now she had friends. Her husband was gone, but life went on.

I am living in the city now, and my paper boy is a lady named Edna with three kids. She asks me how I'm doing. When I don't say "fine", she sticks around to hear my problems. She's lived in the city for most of her life, but she knows about community. Community isn't so much a place as it is a state of mind. You find it whenever people ask you how you're doing because they care, and not because they're getting paid to do so. Sometimes it's good to just smile, nod your head and listen.

As you move out of your teens and into your 20s and 30s, your musical tastes start to solidify and you likely quit keeping up with popular music. Now, research has found the average age at which your music library is unlikely to change: 33.

The study's author reached this conclusion by analyzing data on U. S. Spotify users and comparing it to artist popularity data from music intelligence company The Echo Nest.

To determine the age at which we stop seeking out new tunes, the author gathered self­reported age data from Spotify and looked at users' "Taste Profiles"， which tracks how many times listeners have streamed music of individual artists. These artists were then matched to their popularity rank on The Echo Nest.

The average teen listens almost only to music among the Billboard, the top 200 albums in the country, but this music represents a smaller part of their streaming as they age. In their teens, they listen to a lot of the same music, over and over again. Frank T. McAndrew, a professor of psychology at KnoxCollege, explains that that's the "mere exposure effect" at work, and it basically means, the more we're exposed to something, the more we like it.

There are many reasons why a person may stop streaming the current top musical hits, and the author looked into one by identifying Spotify listeners with large amounts of children's music and nursery rhymes in their libraries. In other words, when users may have become parents.

But the study concludes with some good news for parents："If you're getting older and can't find yourself staying as related to the popular music as you used to, have no fear—just wait for your kids to become teenagers, and you'll get exposed to all the popular music of the day once again!"

"Are you going to the audition (试镜)?" Someone asked Connie, as we came out of ballet class.

"What audition?" I asked.

"Oh, nothing," said Connie. "It's for The Ed Sullivan Show. You wouldn't be1."

The Ed Sullivan Show was a famous one­hour show on CBS. They constantly needed performers for their new shows. This time they were looking for six dancers to support the star performer Jimmy Durante.

"Why not? I'd love to go！" I 2.

Connie smiled at me and said, "I don't think you are 3 yet, Eva. "

Later that night, I couldn't fall asleep. It 4 me. Who said I shouldn't go to the audition? Only because I was a young novice (新手)? How would I know if I didn't try?

The next morning, I 5 I was going to the audition. I packed my dancing shoes, and put on bright red lipstick. As I looked at my 6 in the mirror, I saw one thing missing. I put on a smile.

I took the subway to the Eighth Avenue and walked to the rehearsal studio. I 7 and took my place nervously.

The audition began. More and more dancers were knocked out. I was still there with my friends. Then we were asked to do a jeté en l'air 8: stand on one leg, kick the other one up and out as close to a split as possible, and then do a turn in the air. Hopefully, you'd land on both feet.

All the other candidates did the jeté beautifully. It was my turn. I took the preparatory step, and with that never­ending smile, I leaped up into the air, turned in mid­air and landed flat on my back. But even then, the smile never 9 my face.

When everything settled down, my friends were instructed to go to the right. When I was told to go to the left, their faces told they felt 10 for me.

I picked up my belongings and prepared to leave when the choreographer (编舞) called out to me, "Where are you going? You've got the 11 if you want it. "

Did I want it? I certainly did. I thought I had been 12！

There were no jetés in the 13. I made my first appearance on national TV. I never stopped 14, and I always landed on my feet.

It proved once again that a smile will get one 15 than a frown ever will.

Hip hop is getting its very own museum in its birthplace in New York State. The Bronx, the permanent home of the Universal Hip Hop Museum, set to open in 2023, is (celebrate) the history of hip hop, which was created by (Africa) Americans, Latino Americans and Caribbean Americans.

Rocky Bucano is the museum's director. He noted that until now there hasn't been a physical place that is devoted to (preserve) hip hop history and culture. He said that the museum started as idea about eight years ago when some hip hop singers hoped the stories of hip hop could be (accurate) told and passed down.

When the museum (finish), the 5,570­square­meter space will have interactive (互动的) exhibits, live shows, film screenings and conferences. One room will have a high­tech console (控制台) interactive characteristic will take visitors on a hip hop history trip based on their reactions different characters in a game.

The exhibits will include hip pop (music) Kurtis Blow's original beatbox machine, and the first and second rap (record) ever released.