任給实数a，b定义a⊕b=a×b，a×b≥0ab，a×b＜0设函数f（x）=ln
题型：填空题
问题：
任給实数a，b定义a⊕b=
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题型：填空题
Yesterday I was shopping for a few items(物品).With nothing to do at home, my son, who just left university, was ready to go together with me.
As I pushed the basket towards the register(收银机),I checked my items to see how many I had, thinking I might go to the Express Line(快速通道)where the sign said“Ten items or less”.
I started to go to that line and my son said,“Mon, you have twelve items!”I said,“You know, but they’re close.” He said,“Why are you in such a hurry to get home? You should go to the Regular Line because you have over ten items.”
Knowing he was right. I agreed and then pushed the basket to the next line. So I was waiting for my turn there and I was just removing my items from the basket to pay for them when a young man came up behind me in line with two items.
I just left the Express Line because I had too many and now I really wanted to get finished. Again, my son came up.“Mom, he has only two items and the Express Line is very long now. Won’t you just let him go first?”I agreed, and the young man smiled widely and thanked me several times.
It felt good to be with my son and have him remind me not to live a hurried life. Do what’s right and also be kind. I really take pride in him.
小题1: The writer ________ when she was pushing the basket towards the register.
A．lost something she liked best
B．found her favourite item
C．checked her handbag
D．counted the items she had小题2:The writer went to the Regular Line because _______.
A．she had 2 items
B．she had 12 items
C．she was in a hurry to get home
D．she wanted to wait for her son小题3:Of the following, which order is right according to the story?
①prepare to remove the items from the basket
②let the young man behind go first
③walk towards the Express Line
④return to the Regular Line
A．②①④③
B．④②③①
C．③④①②
D．①③④②小题4: If you pay for your items at the Express Line,_____.
A．you need to help others
B．you must wait for a long time
C．you can get finished more quickly
D．you should buy more than ten items小题5:What did the writer learn from her son that day?
A．Enjoy your life and be kind.
B．Don’t buy too many at a time.
C．Try to be friendly to your family.
D．Never waste time waiting in line.
