rènshi nǐ hěn gāoxìng 认识 你 很 高兴 means（）
A. Nice to meet you
B. You are very happy
C. See you soon
D. Good morning
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jīnɡlǐ hǎo 经理 好 means（）
A. Hello teacher
B. Hello manager
C. Hello friend
D. Hello classmate
provides an explanation for the origin of mass（）
A. Higgs mechanism
B. Yang-Mills gauge theory
C. The general theory of relativity
D. The special theory of relativity
The key technologies of TBMs include（）
A. Cutting efficiency without instability
B. Power transfer without unbalance
C. Sensing control without misalignment
D. Shape design without high cost
proves that space can be curved by mass（）
A. The general theory of relativity
B. The special theory of relativity
C. Yang-Mills gauge theory
D. Non-conservation of parity
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