试题与答案

判断下列每对事件是不是互斥事件: ①将一枚硬币抛掷两次,记事件A:两次出现正面;

题型:填空题

题目:

判断下列每对事件是不是互斥事件:

①将一枚硬币抛掷两次,记事件A:两次出现正面;事件B:只有一次出现正面.______

②某人射击一次,记事件A:中靶;事件B:射中9环.______

③某人射击一次,记事件A:射中环数大于5;事件B:射中环数小于5.______.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:该交易为卖出宽跨式套利,最大收益为收取的权利金。即最大盈利=500+300=800(点)。

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题型:完形填空

Dear Sigmund Friend
My name is Simon and I am a Grade 9 student. I am crazy   1   football! I love   2   football, reading about football, and of course, playing football. My dream   3  a great football player. However, my love of football has become a big problem, and I would like your   4  .
I have   5  friends, and we always play football together at school or in the park after school. We like staying out late to play football. We often play for three hours or more and forget when to stop. Then I   6   trouble at home because my parents do not allow me to play outside after 6 p.m. I really do not understand why they are so strict. I feel stressed and angry     7  . I believe it is important for us to spend some time on our hobbies. They can help us relax and make our lives    8  .I wish I could have my parents’   9  .
Is it bad to stay out late to play football? Should I spend less time on it? I really do not know   10  . Can you please advise me how to achieve a balance between my schoolwork and my hobbies? Thanks a lot.
Best wishes
Simon
小题1:
A.forB.withC.ofD.about
小题2:
A.watching B.seeingC.looking atD.looking
小题3:
A.am to beB.is to beC.is to beingD.are to be
小题4:
A.bookB.workC.adviceD.school
小题5:
A.muchB.not anyC.fewD.plenty of
小题6:
A.get inB.get intoC.get onD.get off
小题7:
A.from time to timeB.from times to times
C.between time and timeD.between times and times
小题8:
A.much interestingB.more interested
C.more interestingD.the most interesting
小题9:
A.supportB.supportedC.supportingD.supports
小题10:
A.why to doB.when to doC.what to doD.where to do
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题型:综合

读“长江流域图”、“黄河水系示意图”,回答下列问题。(10分)

(1)上下图中两河流发源地处于我国地势的第   级阶梯,发源地所在省区的行政中心是       

读“长江流域图,长江中、下游的划分地E______,最大支流汉江与长江干流交汇于城市B_______。重要水利枢纽工程D_______水利工程所在地水能资源丰富。

(2)读“黄河水系图” 图中数字代号表示划分黄河上游和中游的地点是_______,历史上有“黄河一害,惟富一套”之说。上游的平原由于黄河的灌溉,形成了富庶的农业区,;黄河中游的主要问题是水土流失,图中字母ABCD所在地点属于中游的是:_______ 。“害”主要发生在黄河的下游河段,形成了地上河。所以治理黄河的关键是加强中游黄土高原的___    ____工作。

(3)长江黄河滚滚向东,这反映了我国的地势特征 :                             。这样的地势特征对我国气候产生什么样的影响?                           

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