_________professional violinist practices for...

_________professional violinist practices for several hours a day, but__________ violinist has his own way of playing the Beethoven concert．

A．Each, every   B．Every, each    C．One, a        All, each

高三英语单项填空中等难度题查看答案及解析

Teenagers who check social media for several hours a day are at the risk ofdeveloping ADHD (多动症), a study has concluded.

The research team, from the University of Southern California, tracked 2,600teenagers aged 15 and 16. They asked them how many times they checked theirphones and other digital devices for various reasons, and then monitored them for symptoms of ADHD. After two years, those who had checked their phones the mostoften were twice as likely as those who checked the least often to show signs ofADHD.

Writing in the JAMA medical journal, the scientists said, “Modern mediadevices immediately inform users when new text messages, social media postings, or videogame play invitations arrive. Exposure to such information may drawattention away from important tasks. Frequent distraction could interrupt thedevelopment of constant attention and organization skills.”

They believe constant access to instant entertainment also has an impact. Researcher Professor Adam Leventhal said all previous research had focused on the link between ADHD and televisions. “What’s new is that previous studies on thistopic were done many years ago, when social media, mobile phones, tablets andmobile apps didn’t exist. We can say with confidence that teens who are exposedto higher levels of digital media are significantly more likely to develop ADHDsymptoms in the future,” he said.

Leventhal believes the findings help fill a gap in understanding how newmobile media devices and seemingly limitless content pose a mental health risk forchildren. And the findings serve as a warning.

British scientists welcomed the findings. But Professor Andy Przybylski of theOxford Internet Institute said, “The study relies on survey responses provided bythe students in question. It is not clear if teachers or parents would rate the childrensimilarly or if the self-reported measure of digital screen use is related with eitheractual behavior or higher quality survey items.”

1.How did the researchers conduct the study?

A. By monitoring 2,600 teenagers with ADHD.

B. By tracking the participants for two years.

C. By analyzing data from previous researches online.

D. By controlling different teens’ time spent on social media.

2.What does Leventhal think of the exposure to higher levels of digital media?

A. It will cause diverse ADHD symptoms.

B. It will create higher ADHD risks.

C. It will weaken teenagers’ confidence.

D. It will have a major influence on organization skills.

3.What does Professor Andy Przybylski think of the study?

A. It provides a better understanding of the media.

B. It should have focused on parents’ responses.

C. Its findings are not reliable enough.

D. It’s a breakthrough in this field.

4.What can be a suitable title for the text?

A. The use of digital media is on the rise

B. Teens are increasingly exposed to ADHD

C. Heavy use of social media may increase ADHD risks

D. Teens’ exposure to modern media calls more attention

高三英语阅读理解中等难度题查看答案及解析

Only after they had discussed the matter for several hours ______ a decision.

A. they reached                   B. did they reach

C. they reach                     D. do they reach

高三英语单项填空中等难度题查看答案及解析

If you live in a place where most people speak English, you may use the language for several hours each day.1.Your mind stops trying to translate things from your native language into English.

However, as an English beginner, you may live in places where English is not the main language. The good news is that thinking in English can bring you a huge step closer to fluency！The following are some mental exercises that can help.

Think in single words.

2.So, a good first step is to think in individual words. Look around you. What do you see? In your head, try to name each object in your surroundings, whatever it is and wherever you are.

Think in sentences.

The next exercise is thinking in simple sentences. For example, if you are sitting in a park, you can tell yourself things like, “3.” and “I like everything here.”

Describe your day.

You can describe your day and make plans in the morning, such as, “When I leave the house, I'm going to get an iced coffee.4.I'll hand in my homework after arriving.”

5.

When you do this, you are imagining yourself speaking to someone else. You are asking the questions and thinking of replies. For example, let's say the imaginary person asks you a question, like, “What did you do last night?” How would you answer?

A.Find a partner.

B.The air is so fresh.

C.Think in conversation.

D.Then I'll take the bus to class.

E.Your hard work finally paid off.

F.Most experts note that it's best to start small.

G.So, it may become part of your "inner speech".

高三英语七选五中等难度题查看答案及解析

Only after they had discussed the matter for several hours ______ an agreement.

高三英语单项填空中等难度题查看答案及解析

Only after they had discussed the matter for several hours ________ a decision.

A．they reached　                 B．did they reach

C．they reach　                 D．do they reach

高三英语单项填空中等难度题查看答案及解析

Only after they had discussed the matter for several hours _______a decision.

　A they reached        B did they reach     C they reach     D do they reach

高三英语单项填空中等难度题查看答案及解析

A

A man found a cocoon(茧)of a butterfly．He sat and watched the butterfly for several hours as________ it struggled to its body through that little hole．Then it seemed to stop making any________．It appeared as if it had gotten as far as it could and it could go no farther．Then the man decided to help the butterfly，so he took a pair of scissors and cut off the________bit of the cocoon．The butterfly then emerged ________ ．But it had a big body and small，shriveled(皱缩的) wings．The man ________ to watch the butterfly because he expected that，at any moment，the wings would ________ and expand to be able to________the body，which would contract in time．________ happened! In fact，the butterfly spent the rest of its life crawling around with a big body and shriveled wings．It never was able to fly．

What the man in his ________ and hurry did not understand was that the restricting cocoon and the________　 required for the butterfly．To ________ the tiny opening were nature’s way of forcing liquid from the body of the butterfly into its wings，so that it would be ready for flight once it achieved its ________ from the cocoon．

Sometimes struggles are exactly what we need in our life．If nature allowed us to go through our life without any obstacles，we would not be as strong as what we could have been．And we could never________ …

1.A．find　　　　　　　　　　 B．pull　　　　　　　　　　 C．drag　　　　　　　　　　　　 D．force

2.A．progress　　　　　　　 B．sense　　　　　　　　　　 C．change　　　　　　　　　　 D．fun

3.A．vacant　　　　　　　　 B．left　　　　　　　　　　 C．additional　　　　　　　　 D．remaining

4.A．closely　　　　　　　　 B．easily　　　　　　　　　 C．steadily　　　　　　　　　 D．quietly

5.A．paused　　　　　　　　 B．turned　　　　　　　　　 C．continued　　　　　　　　 D．urged

6.A．enlarge　　　　　　　　 B．lengthen　　　　　　　　 C．stick　　　　　　　　　　　 D．twist

7.A．wrap　　　　　　　　　　 B．press　　　　　　　　　　 C．support　　　　　　　　　　 D．shelter

8.A．Everything　　　　　　 B．All　　　　　　　　　　　 C．Neither　　　　　　　　　　 D．Something

9.A．regret　　　　　　　　 B．comfort　　　　　　　　 C．favor　　　　　　　　　　　 D．pride

10.A．struggle　　　　　 　 B．energy　　　　　　　　　 C．experience　　　　　　　　 D．help

11.A．look through　　　　 B．get through　　　　　　 C．1ive through　　　　　　 D．pull through

12.A．dream　　　　　　　 　 B．victory　　　　　　　　 C．purpose　　　　　　　　　　 D．freedom

13.A．fly　　　　　　　　　 B．jump　　　　　　　　　　 C．walk　　　　　　　　　　　　 D．stand

高三英语完形填空中等难度题查看答案及解析

23. If Catherine keeps practicing the violin in this way, she______to make a famous violinist.

高三英语单项填空简单题查看答案及解析

Our plane delayed taking off as we ran into a storm. We were ________ for several hours at the airport, waiting for the storm to clear up.

A. figured out　　 B. built up　　 C. held up　　　 D. taken off

高三英语单项填空中等难度题查看答案及解析