700 4p

I uploaded the feedback，and must use the readings:

https://s3.us-east-1.amazonaws.com/blackboard.learn.xythos.prod/5849b9bae4172/1405404?response-content-disposition=inline%3B%20filename%2A%3DUTF-8%27%27Basu%25208.pdf&response-content-type=application%2Fpdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20190502T140451Z&X-Amz-SignedHeaders=host&X-Amz-Expires=21600&X-Amz-Credential=AKIAIL7WQYDOOHAZJGWQ%2F20190502%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=9c07238ba59f7663a54bbea19d5ec5ff57d98b4d12aa258ea690b01db24d84e3

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https://s3.us-east-1.amazonaws.com/blackboard.learn.xythos.prod/5849b9bae4172/1455116?response-content-disposition=inline%3B%20filename%2A%3DUTF-8%27%27Salazar-Parren%25CC%2583as%252019%2520%25281%2529.pdf&response-content-type=application%2Fpdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20190502T140645Z&X-Amz-SignedHeaders=host&X-Amz-Expires=21600&X-Amz-Credential=AKIAIL7WQYDOOHAZJGWQ%2F20190502%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=97496b15d3d67738c36fd00a58ca47e9dc8aa82dcf414bf566119371613799da