Both are great ways to help improve your vocabulary and spelling. However I would suggest frequent reading to familiarize yourself with the words.
Answer:
No; Warren weakens her point by claiming that the Paycheck Fairness Act would "give women the tools to combat wage discrimination." No; Warren weakens her point by noting, "Today, a woman can get fired for asking the guy across the hall how much money he makes." Yes; Warren supports her point by noting, "Pay inequality also means a tougher retirement for women."
Explanation:
In addition to the aforementioned answer, the rhetoric that women make less simply because of discrimination, is factually inaccurate and is not supported by any data. In fact the difference in income is always drawn back to the job choices that women choose. Women are more art/literature bound for jobs whereas men choose higher paying jobs such as STEM, engineering, etc...
It is less vivid; "raced after" emits a feeling of either action, suspense, or energy. It allows the reader to connect and fully understand what is going on. "ran after" is vague and emits little high energy.
Answer: Being generous is so important because it will come back to you later on in life. If you're mean to someone that might come back to you negatively.