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【判断题】
差分方程y(n)- 5y(n- 1) + 6y(n- 2) =0的特征方程为 ()。A.
正确
B.
错误
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举一反三
【简答题】When Frank began his story, we all listened. “I grew up in San Pedro. My Dad was a fisherman, and he loved the sea. He had his own boat, but it was hard a living on the sea. He worked hard and ...
【单选题】听力原文：W: What are you doing here? I thought you were going out to make your rounds. M: I was, but Jack asked me to stick around the office today. He said we are really understaffed, and he needs me to ...
A.
He left his car at home.
B.
He was needed in the office.
C.
He was not up to it.
D.
He had to talk to the woman.
【简答题】I am a single mom and have a child. Knowing that I could not __21__ to get him anything at all for his birthday, I felt broken-hearted. __22__ I decided to post a(n) __23__ on “Wish Upon A Hero” websi...
【简答题】根据对话内容，从对话后的选项中选出最佳选项，并将其答案标号填入题后的空白处。选项中有两项为多余选项。 Question: Why is it so hard for some people to apologize after they’ve done something wrong? I have made every effort to persuade my uncle to be nice...
【简答题】根据短文内容，用方框中所给的单词填空。 himself, better, killing, lost, smoking My father smokes and seems to be okay, but I think if he stops he'll feel a lot 1 about himself. All of his friends smoke and I told them ho...
【简答题】电影发明的三大科学依据是什么?
【单选题】I just wish he would do something ________ with his new computer.
A.
produce
B.
product
C.
productive
D.
production
【单选题】You meet an American for the first time. And you shake hands with him . His handshake is very firm and almost painful.,and he also touches your right arm at the same time. What you think ?
A.
This is just his way of being friendly.
B.
I wish he would keep his hands to himself.
C.
Ouch, that hurts.
D.
I'm sorry, have we met before?
【简答题】完形填空 Not long after I first came to China, I had a telephone call from a young Chinese friend, “I’ve just _1_ married,” said the young man . “My wife _2_ I would like you to come to our house _3_ dinn...
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