Explain how the following pairs of sentences differ in meaning. 1. a) The road CAN be blocked. b) The road MAY be blocked.
2. a) We WERE HAVING a party when my sister announced her engagement. b) We HAD a party when my sister announced her engagement.

1) May and Can suggest possibilty, can and may in this sentence both suggest possibilty

2) In this sentence it says that you were already HAVING a party when your sister anonced here engagement versus you HAD a party after the sister told of her engagement

Explanation:

both the address and the poster use diction to convey their message. diction is defined as a style of writing or speaking based on the types of words chosen in order to send a message. parallelism is when a similar sentence structure is used for several sentences on a text; roosevelt's address doesn't follow that. repetition has to do with repeating a word or sentence in order to emphasize and idea, however neither the poster nor the address use repetion. finally, the address doesn't use images to convey a message.