题目内容：

It is 6:00a.m.on the first day of the school year. In Chery brook Technology High School, mathematics teacher Eddie Woo is already at work.

One of the first things before the first bell rings is to set up his tripod（三脚架）and iPad in the middle of the classroom. “I’m Mr. Woo. I record my lessons. I record all of them. In fact, I’m about to record this one,” he explains to his new maths class.

He started posting videos online in 2012 for a student who was sick with cancer and missing a lot of school, so he started sharing them across the country and beyond. Wootube now has more than 38,000 subscribes(用户) and has attracted almost 4 million views worldwide.

Cherybrook Technology High School principal(校长) Gary Johnson said Mr. Woo was helping maths teachers in Australia and making maths popular again. “He has an ability to simplify(简化) maths to a level where kids can really understand it.” Mr. Johnson said.

12-year-old student Emily Shakespear said Mr. Woo’s teaching style made maths easy and interesting. “I don’t want to say it, but he sucked me into maths,” she said. Owen Potter, who attends high school in Cobar. agreed. “It’s difficult to understand how someone in Sydney can influence thousands of people across the whole country,” he said.

Mr. Woo won the 2017 University of Sydney Young Alumni Award for Outstanding Achievement, and he was one of 12 Australian teachers honored at the Commonwealth Bank Teaching Awards.

1.Eddie Woo set up an iPadin the middle of the classroom with the purpose of ________.

A. listening to music    B. playing a video

C. recording his class    D. showing pictures

2.What can we infer from the statistics（数据）in the third paragraph?

A. Mr. Woo’s teaching videos online are very popular.

B. Mr. Woo had made a lot of money by selling videos.

C. Mr. Woo posted videos online helping many adults.

D. Mr. Woo created his Wootube in 2012 in Sydney.

3.According to Gary Johnson, Mr. Woo’s maths lessons are ________.

A. difficult to follow    B. easy to understand

C. simple to handle    D. challenging to learn

4.What is the main idea of the last paragraph?

A. Mr. Woo is the most well-known maths teacher in Australia.

B. Mr. Woo graduated from the University of Sydney with honors.

C. Mr. Woo won the Commonwealth Bank Teaching Awards.

D. Mr. Woo’s contributions to teaching have been recognized.