题目内容：

    China's largest search engine Baidu has said it will make its latest artificial intelligence (AI) technology accessible to developers and businesses as part of the company's latest move into AI, big data and cloud computing.

AI solution "Tianzhi" was launched at a cloud-computing summit held in Beijing Wednesday. It includes services in three fields: sensing technology, such as image and voice processing, machine learning, and deep learning, an advanced form of machine learning, said Zhang Yaqin, CEO of the Nasdaq-listed company, at the summit.

Developers can access facial or voice recognition, algorithms（演算法） for data analysis and projections, and deep learning applications, Zhang said, adding that the technology could help users innovate in their sectors.

"With more devices connected to the cloud, enterprises will use cloud computing and AI more frequently," said Wu Hequan, an academician at the Chinese Academy of Engineering, "Open AI technology can play a bigger role."

The company also revealed a plan to invest 10 billion yuan (1.45 billion U.S. dollars) in cloud computing in the next five years and establish an innovation center, which will serve 10 million enterprises.

1.What is the main idea of paragraph one?

A. Baidu will further develop its latest AI technology.

B. Baidu has attracted developers’ and businesses’ attention.

C. Users will be able to access Baidu’s latest AI technology.

D. A company will move to AI, big data and cloud computing.

2.“Tianzhi” includes services in the following fields EXCEPT _____.

A. sensing technology

B. voice processing

C. machine learning

D. deep learning

3.What does the underlined sentence in paragraph four probably mean?

A. It’s important for AI technology to be open.

B. AI technology is more important than the cloud.

C. People aren’t aware of the importance of AI technology.

D. Enterprises will hardly benefit from open AI technology.

4.What is Baidu’s next move according to the last paragraph?

A. Reveal a plan to invest in cloud computing.

B. Invest 10 billion yuan to serve enterprises.

C. Get invested from enterprises in the next five years.

D. Invest in computing and build an innovation center.