听第10段材料，回答第17至20题。

17.What does the speaker do exactly?

A.She is a school doctor. B.She is a student consultant. C.She is the headmaster of a school.

18.How can students ask for the speaker's advice?

A.By visiting her. B.By sending e-mails to her. C.By writing letters to her.

19.When does the speaker work in her office during the week?

A.In the evenings. B.At weekends. C.Every day.

20.Which of the following is the most typical of studentsJ problems?

A.Playing computer games. B.Medical problems. C.Difficulty in making friends.

第二部分 阅读理解（共两节，满分40分）

第一节 （共15小题；每小题2分，满分30分）

　　阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

　　Each year，Time magazine picks the best of the year's inventions that will change how we live9 work，and play。

　　Aira

　　For people who are blind，everyday tasks such as walking to school or washing clothes can be tough.What i£ they could "borrow" the eyes of someone who can see? That's the thinking behind Aira.Aira is a service.Users send live videoes of their surroundings to an agent.This is done with special glasses or a smartphone app.The agents are always available.They can answer questions，describe objects，and guide users through a location.

　　3M Smog-reducing Granules

　　Smog is a type of air pollution.It comes from car and factory emissions.The company 3M has created a new material > 3M smog-reducing granules （微粒），which can break down smog granules in the air.The broken-down granules are washed away the next time it rains.The granules will help reduce air pollution.

　　The Whill Model CI

More than 3 million Americans use wheelchairs to get around.But most wheelchairs are hard to move on many surfaces.The Whill Model CI is different.It is a new electric wheelchair.It can climb obstacles two inches high and move around in tight spaces.The wheelchair can also be taken apart in