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【简答题】
阅读理解。 Reporter: How long have you been a firefighter? Wilson: For eight years. JP Reporter: How did you get started? Wilson: First, I had to take a lot of tests in two weeks. Then, I went to the firefighter school for four months. I learned how to put out fires and how to use equipment I also had a full-time training every day! Reporter: How do you stay safe on the job? Wilson: I wear special clothing. It helps keep me protected from fire. I also carry an oxygen tank (氧气瓶) and a mask (面具). They help me to breathe in a smoke-filled building. Reporter: Are there any new tools that firefighters use? Wilson: We have a special camera that can see in the dark. It can find heat. That way, we can exactly tell the place of a fire. Reporter: Do you save pets? Wilson: Just three days ago, I helped save some cats. They were hiding under the beds. Pets usually hide during a fire because they are afraid of danger. Reporter: Do you ever get afraid? Wilson: No. There is no time to he afraid. I just think about what to do to put out the fire safely. Reporter: What do you like best about being a firefighter? Wilson: Helping people! 1. Kate Wilson has done her job for ________. A. 2 weeks B. 3 days C. 4 months D. 8 years 2. To become a firefighter, Kate Wilson ________ at first. A. took a lot of tests B. learned to stay safe C. saved some animals D. used fire equipment 3. Kate Wilson says she does not get afraid because ________. A. she has an oxygen tank B. she knows how to fight fires C. she enjoys finding heat D. she is too busy putting out fires 4. As a firefighter, Kate Wilson likes ________ most. A. wearing a mask B. asking questions C. helping people D. hiding in smoke 5. What did the reporter make this interview for? A. To tell people what a firefighter does. B. To teach people how to prevent fires. C. To make people want to be firefighters. D. To show people how a firefighter is trained.
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举一反三
【单选题】The best title of this passage is____.
A.
Jewish and Non-Jewish in American
B.
Jewish Identity in America
C.
Judaism-a Religion?
D.
College Jewish Students
【简答题】LP的基可行解与基解的区别是__________。
【单选题】下列关于可行解、基解、基可行解的说法错误的是 _
A.
可行解中包含基可行解
B.
可行解与基解之间无交集
C.
线性规划问题有可行解必有基可行解
D.
满足非负约束条件的基解为基可行解
【单选题】When I was growing up, the whole world was Jewish. The heroes were Jewish and the villains were Jewish. The landlord, the doctor, the grocer, your best friend, the village idiot, the neighborhood bull...
A.
quite satisfied with her life
B.
a poor Jewish girl
C.
born in a middle-class family
D.
a resident in a rich area in New York
【单选题】基可行解对应的基,称为()。
A.
最优基
B.
可行基
C.
最优可行基
D.
极值基
【判断题】除了悬崖和垂面以外,等高线决不能相交。
A.
正确
B.
错误
【单选题】俄罗斯文学史上第一个讽刺作家是___________。
A.
康捷米尔
B.
果戈理
C.
罗蒙诺索夫
D.
谢德林
【判断题】对应于基可行解的基称为可行基。()
A.
正确
B.
错误
【单选题】满足 条件的基解称为基可行解。
A.
基变量非负
B.
基变量全为正值
C.
基解就是基可行解
【单选题】线性规划问题的基可行解与可行域顶点的关系是( )
A.
顶点与基可行解无关
B.
顶点少于基可行解
C.
顶点与基可行解无关
D.
顶点多于基可行解
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