Blockchain is used for depositing evidence, mainly using its technical characteristics（）
A. Data cannot be tampered with
B. Encrypted storage
C. distributed
D. Centralization
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We are going to learn____ next week（）
A. Lesson Twelfth
B. Lesson Twelve
C. Twelfth Lesson
D. the Lesson Twelfth
They have tried______ to persuade him to give up smoking（）
A. possible everything
B. almost everything possible
C. almost possible everything
D. everything almost possible
The key supporting technologies of an intelligent society are（）
A. 5G technology
B. artificial intelligence
C. Blockchain
D. Internet of Things
The boy wanted to ride his bicycle in the street but his mother told him（）
A. not to
B. not to do
C. not do it
D. do not do
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