Chinese President Hu Jintao arrives on first visit to US

What do you think the phrase 'Look up' implies in different contexts?

Can you provide examples of situations where someone might say 'Look up'?

How might the meaning of 'Look up' change based on tone or emphasis?

In what ways can 'Look up' be interpreted in a digital context?

Discuss the potential actions one might take after hearing 'Look up'.