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Read the following text and choose the most suitable heading from the list A-F for each paragraph. There is one extra heading which you do not need. A. Study in class with high proficiency B. Provide an overall picture of CAHSEE C. Purchase a CAHSEE test prep book D. Stay organized during the CAHSEE process E. Focus on what’s included in CAHSEE F. Review the material about CAHSEE 小题1:All California students must pass the California High School Exit Examination (CAHSEE) to receive their high school diploma. The test is first taken in the 10th grade, but retakes are allowed. The CAHSEE consists of two parts: English language arts and mathematics. The contents of the exam are based on the California state curriculum in those subjects. A scale score of 350 in each part is required to pass. 小题2:To pass the CAHSEE, concentrate on studying the types of questions asked on the exam, and don’t worry about information that will not be asked. The mathematics section includes statistics, data analysis, probability, number sense, mathematical reasoning, measurement, geometry and grades 6 and 7 algebra. You will also need to know how to work with fractions, decimals and percentages. The English language arts sections covers vocabulary, decoding, comprehension and your ability to read and analyze short passages of text. You will also need to know basic spelling, grammar and punctuation and be able to write a short essay. 小题3:You can find CAHSEE practice tests and study guides on the California Department of Education website. To pass the CAHSEE, read these study guides —— they contain information about the contents of the exam. Also take several practice tests. The first time, concentrate only on answering the questions and checking your answers. After this, time yourself so you get practice in completing all the questions in good time. Look up the answers on the answer sheets given with the practice tests and make sure you understand any of the answers you got wrong. 小题4:One of the best ways to practice for the CAHSEE is to pay attention in the classroom. Your teachers will teach all of the material you need to know to pass the test. If you listen in class, do your homework and ask your teacher for extra help with anything you are having difficulty in understanding, you will have done most of the work you need to pass the CAHSEE. Another everyday way to study is to read for fun. The more you read, the more comfortable you will be with the English language arts skills you need to demonstrate. 小题5:When taking the CAHSEE, remain calm and organized. In the English language section, read the questions and passages carefully and make sure you understand what the question is asking before you try to answer. For the essay, take a few minutes to outline your essay before you start writing. Review your work and correct grammar, punctuation and spelling mistakes. In the mathematics section, work through the questions on scrap paper rather than trying to do them in your head. The test has no trick questions. If a question seems confusing, read it again and think about how it applies to the subjects you have studied.
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【单选题】下面四个关系表达式是等价的,是判别它们的执行效率( ) 。 E1 = π A ( σ B=C ∧ D=E ′ (R × S) ) E2 = π A ( σ B=C (R × σ D=E ′ (S) ) E3 = π A (R ∞ B=C σ D=E ′ (S) ) E3 = π A ( σ D=E ′ (R ∞ B=C S) )
A.
E3 最快
B.
E2 最快
C.
E4 最快
D.
E1 最快
【简答题】附件为一次调查数据的元(meta)文件和数据文件。请以适当的方法,尽可能充分地扫描这组数据的特点。请给出使用的R代码(如使用其它统计软件,请给出相应的工程文件或者证明分析过程的屏幕截图)。 stature.meta.txt stature.txt
【简答题】数制转换:1100010=( )D , 101110=( )D
【单选题】食物中生物学价值最接近于100的蛋白质是
A.
大豆蛋白质
B.
鸡蛋蛋白质
C.
鱼类蛋白质
D.
谷类蛋白质
【单选题】十进制整数100转换为二进制数是
A.
1100100
B.
1101000
C.
1100010
D.
1110100
【单选题】食物中生物学价值最接近于100的蛋白质是()
A.
大豆蛋白质
B.
鸡蛋蛋白质
C.
鱼类蛋白质
D.
谷类蛋白质
E.
肉类蛋白质
【单选题】下面四个关系表达式是等价的,是判别它们的执行效率( ) 。
A.
E3最快
B.
E2最快
C.
E4最快
D.
E1最快
【单选题】十进制数100转换为二进制数是 。
A.
1100100
B.
1101000
C.
1100010
D.
1110100
【单选题】将二进制数1100010转换成对应的十六进制数是( )。
A.
0xd2
B.
0x62
C.
0xc2
D.
0x63
【简答题】沉积岩层不整合分为( )与( )两种。
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