(2013·山东省胶东示范学校二模)More children in Beijing wi...

(2013·山东省胶东示范学校二模)More children in Beijing will reach school age next year, ________ a shortage of primary school teachers in the capital.

A．create      B．to create

C．creating      D．created

高三英语单项填空中等难度题查看答案及解析

(2013·山东省胶东示范学校二模)—It's dangerous to take photos of lightning.

—The challenge is not for ________， but I think it's worth　 attempting.

A．anybody　　      B．everybody

C．nobody　　　      D．somebody

高三英语单项填空简单题查看答案及解析

(2013·山东省胶东示范学校二模)—I forgot to bring my pen for the lecture.

—________. I have got a spare one.

A．Go ahead      B．You're welcome

C．Not to worry      D．Don't mention it

高三英语单项填空中等难度题查看答案及解析

As they reach school age, about 90 percent of children will have experienced a condition in which fluid (液体) fills the middle ear, muffling (使模糊) sound and sometimes causing infection. The fluid usually clears on its own, but if not, it can lead to a painful ear infection called acute otitis (中耳炎) media. In some cases the fluid can persist for more than a year, causing hearing loss during this period, and slowing down their development of language and social skills.

Diagnosis usually requires a visit to a specialist—but researchers have now developed an app that detects this fluid just as accurately, with only a smartphone and a paper funnel (漏斗).

Doctors typically detect the problem by peering into the ear for a visual assessment. Yet, this method has only a 50 percent accuracy rate. “Right now, if you bring your child to a pediatrician, or to any urgent care family doctor, the way they look at whether or not there’s fluid in the middle ear is by looking at the eardrum,” says Sharat Raju, a surgeon in the department of head and neck surgery at the University of Washington.

For a cheaper and more accessible alternative, researchers at the University of Washington turned to smartphones. First the user follows a template to cut and tape a piece of paper into a funnel, which can be placed between a smartphone and the patient’s ear. Next the app plays a chirping sound through the phone’s speaker; the sound waves bounce off the eardrum and hit the phone’s microphone, where they register and are analyzed by the app. An eardrum with fluid behind it will vibrate (振动) differently than if the middle ear is full of air, as it normally is.

To develop the app, the researchers first played chirps for patients with and without fluid in their ears. They recorded the echoes (回音), which indicate the eardrum’s mobility. Then they used a machine learning model to classify the returning sound waves, determining which audio characteristics indicated a normal ear and which suggested the presence of fluid. Once they tested the app on 98 children, ranging from 18 months to 17 years old, at Seattle Children’s Hospital. It correctly detected fluid in 85 percent of cases, and correctly identified fluid-free ears in 82 percent.

The researchers are currently trying to get FDA approval for the app, and have founded a company to commercialize it. They hope to make it available by the end of the year, to help parents track children’s ear health at home.

1.What do we know about the fluid from the first paragraph?

A.It is mostly part of children’s growth. B.It is unavoidable for any child.

C.It is a permanent physical condition. D.It is beyond any medical means.

2.What does the underlined word “pediatrician” refer to in Paragraph 3?

A.A hospital. B.A specialist.

C.A relative. D.An app.

3.What is the fourth paragraph mainly about?

A.The application of the app. B.The causes of the kid’s ear problem.

C.The purpose of developing the app. D.The experiment of the smartphone.

4.What do the researchers expect of the app?

A.It will upgrade the medical technology. B.It will hit the market in the near future.

C.It will help children do better academically. D.It will save doctors medical operations.

高三英语阅读理解中等难度题查看答案及解析

More and more people are willing to ________ part of their incomes to school children in the poverty­stricken areas.

A．give away　     B．give in　     C．give out　     D．give up

高三英语单项填空中等难度题查看答案及解析

More and more people are willing to______part of their incomes to the school children in the poverty areas.

高三英语单项填空简单题查看答案及解析

(2013·甘肃部分示范学校调研考试)We often provide our children with toys, footballs or basketballs, ________ that all children like these things.

A．thinking　 　　　　　　　　　　　　　　　　　　　　 B．think

C．to think　 　　　　　　　　　　　　　　　　　　　　 D．thought

高三英语单项填空中等难度题查看答案及解析

More subway lines ______ to make travelling easy in Beijing in the coming years.

A．will build B．will be built

C．build D．are built

高三英语单项填空中等难度题查看答案及解析

(2013·山东青岛一模)I was told that ________ 10：20 flight would take us to Shanghai in time to reach ________ Fudan University.

A．the; /      B．the; a

C．a; the      D．/; the

高三英语单项填空中等难度题查看答案及解析

More teens are smoking in Beijing, ______ the number of primary and middle school students picking up the habit has more than doubled from previous years.

A. which　　　　     B. when　　　　     C. where　　　　     D. that

高三英语单项填空中等难度题查看答案及解析