抛物线y=x2向左平移3个单位，再向下平移2个单位后，所得的抛物线_爱下问搜题

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问题填空题

抛物线y=x²向左平移3个单位，再向下平移2个单位后，所得的抛物线表达式是______．

答案

由“左加右减”的原则可知，将抛物线y=x²向左平移3个单位所得的抛物线的表达式是y=（x+3）²；

由“上加下减”的原则可知，将抛物线y=（x+3）²向下平移2个单位所得的抛物线的表达式是y=（x+3）²-2．

故答案为：y=（x+3）²-2．

完形填空

About ten years ago, I was on a plane going west, and a young woman boarded and sat across the aisle (过道) from me. I ___41____ her for two reasons. She was very attractive, and she was holding a teddy bear about half her ____42____. I teased her by asking if she had a ___43___ for the bear. She laughed and said no.
About halfway through the flight she ___44____ over and told me she was going to Tucson to enter rehab (进行康复治疗). She ___45___ to share her life story with me. She had been working as a dancer in a nightclub. That ___46____ had led her down a dark ____47____ to drugs and alcohol. As I listened to her story. I was ____48____ at all she had gone through. I listened to all she shared and told her I was sure she was going to ____49___ it. At the end of the flight, she ___50____ me for listening to her.
A few years later, I got a ___51____ in the mail saying, “Wow, it’s been years since we met on that plane. It is ___52____ how you touched my life.” She went on to tell me that she had ____53____ to stay away from drugs, and had been working for a radio station. She felt she had achieved things she could not have ____54___ that day on the plane. We agreed to set up a time to get ___55___.
When I saw her, she was ____56____ the attractive young woman I remembered. She told me that that little ___57___ we had had turned her life around. She had boarded the plane ___58___ anything would work in her life, and my affirmation (肯定) of her as a person and of her ___59___ had given her the last bit of ___60___ she needed to work through her problems.
The young woman taught me it’s never too late to make a new start in life.

A．disappointed

A．expectation

B．explanation

C．information

D．conversation

B．discoveries

D．possibilities

问答题共用题干题

相见时难别亦难，东风无力百花残。春蚕到死丝方尽，蜡炬成灰泪始干。晓镜但愁云鬓改，夜吟应觉月光寒。蓬山此区无多路，青鸟殷勤为探看。

此诗主要抒写离别相思之苦，为何开头先说“相见时难”？