题目内容：

Entrepreneur and CEO of Tesla and Space X, Elon Musk may have a little more time on his hands, as he’s leaving his position on the board of the Open AI, according to a blog post.

The departure is likely the result of Tesla’s moving into the field of Artificial Intelligence(AI)，which he said in 2017 would be the “best in the world” and would even be able to “predict your destination.” Musk will continue to “donate and advise the organization,” Open AI said in a blog post on Feb. 20, adding that “As Tesla continues to become more focused on AI, this will avoid a potential future conflict for Elon.”

Musk and Y Combiner CEO Sam Altman co-founded the nonprofit enterprise in December 2015, its mission is to develop safe artificial general intelligence and ensure those developments are made public. Open AI researchers published a paper on the site ArXiv. Org, detailing the possible secure threats that come with “malicious” AI. In fact, Musk has heard of the “evil AI” alarm several times. On Aug. 11, 2017, he warned that artificial intelligence poses a bigger threat to humanity, and he told a gathering of state governors that the government needs to regulate AI before robots start “killing people. ”

Musk’s departure from the Open AI board could mean big things for Tesla. As Elon Goodbye, a financial reporter, noted on Futurism, the move “could signal that Tesla is more deeply committed to their own Al projects than we thought.” He added, “Those who have had their ears to any rumors that Tesla is ready to deliver vehicles capable of Level 5 autonomy could take this new Open Al development as a sign that the company is inching closer to that unapproachable goal. ”No company has reached that level of autonomy, which means that a driverless car could navigate any road under any conditions and that all the human “driver” would need to do is to input a destination.

1.Why does Elon Musk leave his position?

A. To create safer AI.

B. To build the powerful Internet.

C. To develop social communication.

D. To avoid a possible conflict with Tesla.

2.What is the Elon Musk’s attitude towards the AI?

A. Suspicious    B. Negative.

C. Sympathetic.    D. Supportive.

3.What can we infer from Elon Goodbye’s comments?

A. Level 5 autonomy is impossible.

B. The rumors about Tesla is meaningless.

C. He has no confidence in Open AI.

D. Level 5 autonomy could set human drivers free.

4.What’s the best title for the text?

A. Elon Musk is planning to compete with AI.

B. Elon Musk is stepping down from AI safety group he co-founded.

C. Elon Musk: AI is humanity’s biggest existential threat.

D. Elon Musk: Open AI will take new measures to cooperate with Tesla.