把直线y=2x+1分别向下平移2个单位和向右平移2个单位后的解析式分别是（ ）
A．y=2x+3和y=2x-1
B．y=2x和y=2x-3
C．y=2x-1和y=2x-2
D．y=2x-1和y=2x-3
∵向下平移2个单位，
∴新函数的k=2，b=1-2=-1，
∴向下平移2个单位得到的直线所对应的函数解析式是：y=2x-1；
∵是平移得到，
∴可设新直线解析式为y=2x+b，
∵原直线经过点（0，1），
∴向右平移2个单位得到的点为（2，1），代入新直线解析式得：b=-3，
∴向右平移2个单位后的直线解析式为：y=2x-3，
故选D．
阅读下面短文，根据短文内容完成表格中所缺信息，每空一词。 One of the most common questions I am asked is whether, when, and how to follow up after a job interview. Following up in some way is necessary. Yes, you can get a job without it, but if you compete with other top candidates(候选人), following up can sometimes help you when the other candidate doesn’t. Here’s how to follow up well: Send a thank-you note at once. E-mail is fine for this and has the advantage of arriving faster, but handwritten notes are still appreciated (欣赏). And if there are many interviews（面试）, send a thank-you note each time. Find out their timeline. Hopefully, you asked about their timeline in the interview itself, but if you didn’t, follow up within a week to strengthen your interest and politely ask what they expect their timeline for a decision to be. Be patient. Most commonly, job seekers are too worried about the result. It doesn’t look worried to express your interest in the job or check in to ask about the timeline. Don’t be nervous if you don’t hear from them at once. The hiring process often takes longer than a candidate would like, maybe the decision makers are out of town. If you’re past the time they indicated you would hear something, this isn’t necessarily cause for nervousness. Hiring often ends up taking longer than expected. Just politely follow up, explain you’re very interested but understand that hiring can take time, and ask if they have the latest timeline. Title: How to follow up after a job interview
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