题目内容：

Learning, Fast and Deep

Over the past five years researchers in artificial intelligence have become the rock stars of the technology world. A branch of AI known as deep learning, which uses neural(神经的) networks to scan through large volumes of data looking for patterns, has proven so useful that skilled practitioners can command high six-figure salaries to build software for Amazon, Apple, Facebook and Google.

The standard route into these jobs has been a PhD in computer science from one of America’s top universities. Earning one takes years and requires a personality suited to academia, which is rare among more normal folk.

That is changing.

Last month fast.ai, a non-profit education organization based in San Francisco, kicked off the third year of its course in deep learning. Since its foundation it has attracted more than 100,000 students around the globe from India to Nigeria. The course and others like it, come with a simple idea: there is no need to spend years obtaining a PhD in order to practise deep learning. Creating software that learns can be taught as a craft, not as a high intellectual pursuit to be undertaken only in an ivory tower. Fast.ai’s course can be completed in just seven weeks.

To make it accessible to anyone who wants to learn how to build AI software is the aim of Jeremy Howard, who founded fast.ai with Rachel Thomas, a mathematician. He says school mathematics is sufficient. “No. Greek. Letters,” Mr. Howard intones, pounding the table with his fist for punctuation.

Some experts worry that this will serve only to create a flood of unreliable AI systems which will be useless at best and dangerous at worst. In the earliest days of the Internet, only a select few nerds, namely computerholics with specific skills, could build applications. Not many people used them. Then the invention of the World Wide Web led to an explosion of web pages, both good and bad. But it was only by opening up to all that the Internet gave birth to online shopping, instant global communications and search. If Mr. Howard and others have their way, making the development of AI software easier will bring forth a new crop of fruit of a different kind.

1.What can we learn about deep learning?

A.It replaces artificial intelligence.

B.It attracts rock stars to practice.

C.It scans patterns for large companies.

D.It helps technicians to create software.

2.Fast.ai is an organization that __________________.

A.ensures one to obtain a PhD B.teaches craft in ivory tower

C.offers a course in deep learning D.requires weeks to apply

3.The underlined words “No. Greek. Letters”in Paragraph 5 means doing fast.ai course is _______.

A.easy B.difficult

C.interesting D.boring

4.It can be inferred from the last paragraph that _______.

A.it is quite reliable for anyone to grasp artificial intelligence

B.the Internet has brought forth a flood of useless AI systems

C.opening up to all leads to instant global search and online shopping

D.simplifying software development may result in unexpected outcomes