Value is the main reason that we see objects and understand objects.
举一反三
- Three objects are brought close to one another, two at a time. When objects A and B are brought together, they attract. When objects B and C are brought together, they repel. Which of the following are necessarily true? A: Objects A and C possess charges of the same sign. B: Objects A and C possess charges of opposite sign. C: All three objects possess charges of the same sign. D: One object is neutral. E: Additional experiments must be performed to determine information about the charges on the objects.
- A junkyard has 500 objects with 2 and 4 wheels. We want to separate the objects into 4 different groups. A: Supervised B: Unsupervised
- When we say that two objects have relative motion， we mean （）.
- The hardest question is: How do we link words _____ objects?
- We should not grip immovable objects when giving a public speech.