---I don’t think your children could have bee...

---I don’t think your children could have been used to the quick pace of life while working in Shenzhen, _____they?

---_____. They thought of returning to Changchun.

A. had ; Yes        B. do ; Yes       C. have ; No.  D. were ; No

高三英语单项填空中等难度题查看答案及解析

But for your support then, I don’t think we _____ the task.

　A. can manage　　　　 B. could have managed

　C. could manage 　　　D. can have managed

高三英语单项填空中等难度题查看答案及解析

I don’t think it wise to give your children _____ they ask for, which, in my opinion, will spoil them in the end．

A．whichever        B．no matter what  C．whatever           D．however

高三英语单项填空中等难度题查看答案及解析

I don’t think you _______ give up the opportunity to go to university which you have been dreaming about.

A. might　　　 B. should　　　 C. could　　　　 D. Would

高三英语单项填空中等难度题查看答案及解析

One in four children and young people could have problematic smart-phone use, according to research that also suggests such behaviour is associated with poorer mental health.

The amount of time children and teens spend using their devices has become an issue of growing concern, but experts say there is still little evidence as to whether spending time on screens is harmful in itself.

The experts behind the latest study said they wanted to look beyond the time young people were spending on smart-phones and instead explore the type of relationship they had with smart-phones.

The results suggest more than 23% of young people have an abnormal relationship with their smart-phones, and that this appears to be associated with poorer mental health-although the research cannot say whether phone use is driving such problems.

“It seems like only a minority of teenagers and young people from various different countries are self-reporting a pattern of behaviour that we recognise from other addictions,” said Dr Nicola Kalk of King’s College London, co-author of the study. “The quality of the evidence is poor, but it is enough to warrant (保证) further investigation.”

Writing in the journal BMC Psychiatry, the team reported how they looked at data from 41 studies involving a total of almost 42,000 participants across Europe, Asia and America, mainly in their teens or early 20s.

These studies used questionnaires to probe the prevalence (普遍) of problematic smart-phone use-behaviours such as being anxious when the device is not available or neglecting other activities to spend time on the smart-phone.

Taken together, the team said on average these studies suggested as many as one in four children and young people had problematic smart-phone use.

Among the studies that probed mental health, the results suggested people with problematic smart-phone use were also more likely to have depression-for which the odds (可能性) were more than three times worse-anxiety, feelings of stress and poor sleep as well as poorer educational attainment.

While the team said it was too soon to call problematic smart-phone usage an addiction, they noted that it appeared to be linked to similar patterns of behaviour and emotion.

Kalk said further studies were needed to explore if these behaviours were hard to break, or cause harm-other key features of an addiction.

The authors argued that the availability and pervasiveness of smart-phones in everyday life meant problematic use of the devices posed a different and much bigger public health problem than substances of abuse or internet gaming.

Kalk said the team were now looking at whether smart-phones were just delivering addictive content, or whether there was something inherently addictive about using such devices.

Dr Amy Orben, an expert in screen time at the University of Cambridge, raised concerns, noting that the definition of problematic internet use varied considerably across studies, and the measures used were questioned.

She said studies finding little signs of problematic internet use might have been overlooked, while the research could not say whether problematic smart-phone use caused poorer mental health.

Prof Russell Viner, President of Royal College of Paediatrics and Child Health, said that parents were navigating unchartered water when it came to technology.

“One of the most critical things for parents to consider is whether screen time is having a harmful impact on other activities like school, relationships or other interests. This study suggests that this is the case for a significant minority of children and young people,” he said.

Viner said in these cases parents should calmly install age-appropriate boundaries on smart-phone use, and ask questions about whether their children were experiencing other problems.

“While screen time is a new problem, part of the solution is tried and tested-open and regular conversations based on respect and trust,” he said.

1.Experts conducted the research to ______.

A.address the concern about adolescent behavior

B.prove spending time on screens is harmful in itself

C.calculate the time young people spent on smart-phones

D.explore young people’s relationship type with smart-phones

2.We can learn from the research that ______.

A.it involved a vast majority of participants across the globe

B.the participants were asked to report their online activities

C.researchers compared different behaviors of the participants

D.problematic smart-phone use is linked to poorer mental health

3.Which of the following might Kalk probably agree?

A.It is hard to break problematic smart-phone use.

B.Internet gaming is problematic smart-phone use.

C.Problematic smart-phone use is an addiction.

D.The research still has some limitations.

4.What’s Dr Amy Orben’s attitude towards the research findings?

A.Supportive. B.Negative.

C.Sceptical. D.Unconcerned.

5.What does the underlined part in Paragraph 16 mean?

A.Screen time is a new challenge to parents.

B.Technology is posing a threat to parents.

C.Parents are lost in the sea of technology.

D.Parents use technology to chart water.

6.According to Viner, what should parents do to solve the problem?

A.Keep track of the screen time of children.

B.Strictly prohibit children from using devices.

C.Have a sincere communication with children.

D.Evaluate the impact of screen time on children.

高三英语阅读理解困难题查看答案及解析

Thank you for your hard work last week. I don’t think we _______ it without you.

A. could have managed B. can manage

C. managed　　　　 D. could manage

高三英语单项填空中等难度题查看答案及解析

Thank you for all your hard work last week. I don’t think we ______ it without you.

高三英语单项填空简单题查看答案及解析

They don’t think the problem so far they_______.（　　 ）

A．have had has been solved

B．have had been solved

C．have to solve been solved

D．have solved has been solved

高三英语单项填空困难题查看答案及解析

_______, I think, and the problem could be settled,

A．If you don’t doubt your efforts            B．So long as you keep up your spirits

C．Making great efforts                     D．A bit more efforts

高三英语单项填空中等难度题查看答案及解析

—Could you please lead your car to me this Sunday?

—_________you have it cleaned after using it.

高三英语单项填空简单题查看答案及解析