当总体中的个体存在一种自然编号(如生产线上产品的质量监控)时,便于试行系统抽样法。 缺点:在不了解样本总体的情况下,所抽出的样本可能有一定的偏差。 适用范围:总体个数较多时。 ③分层抽样: 优点:根据总体几个部分的明显差异,按照比例进行抽取样本,样本的代表性高。 缺点:总体的几个部分差异不明显时,不适合使用分层抽样。分层抽样需要和简单随机抽样或系统抽样方法结合使用。 适用范围:总体是由差异明显的几个部分组成时,往往选用分层抽样的方法。
2017下半年教师资格证考试真题及答案:初中英语学科
一、单项选择题
1、 The main difference between /e/ and…… (2分) 正确答案:A. tongue position
2、 ……is the main rhyming pattern in…… (2分) 正确答案:B. End rhyme
3、 We're all keeping our……crossed that the surgeons do not find anything…… (2分)
正确答案:A. fingers
4、 When implementing the project,we…… (2分) 正确答案:C. run up against
5、 The island measures about 30 miles…… (2分)
正确答案:A. by
6、 ——Will John come to the party? …… (2分) 正确答案:D. neither will Antony
7、 Garbo plays the role of the queen…… (2分) 正确答案:B. rejoicing
8、 ministers decide to instigate an inquiry…… (2分) 正确答案:C. if… would
9、 What is missing at the discourse level between the two sentences…… (2分)
正确答案:C. Coherence
10、 The synonyms \分) 正确答案:D. collocation
11、 Which of the following instructions is helpful in developing…… (2分)
正确答案: B. listen to a story and work out the writer’s intention.
12、 The most suitable question type to check students' comprehension…… (2分)
正确答案: B. referential questions
13、 Diagnostic test is often used for…… (2分)
正确答案:A. Finding out what students know and don’t know 14、 ……activities is often used to develop students's speaking (2分)
正确答案:A. identifying and correcting oral mistakes
15、 ……If a teacher asks studentes to make their own (2分) 正确答案:A. Cognitive strategy
16、 ……When a teacher tells the students that the word \分)
正确答案:D. connotative meaning
17、 ……the last step in the process of writing essays (2分) 正确答案:A. Editing the writing
18、 ……The main purpose of asking questions about the topic before (2分)
正确答案:C. activate students’ schemata
19、 ……to fill in the blanks in a passage with \分)
正确答案:B. syntactic level
20、 ……to talk about their hobbies in groups, (2分) 正确答案:C. peer interaction
21、 ……is closed in meaning to the underlined word\分)
正确答案:C. physical strength
22、 ……underlined phrase\分) 正确答案:B. Will machines eventually replace human being? 23、 ……What makes the instructions sent by smartphones (2分) 正确答案:B. Information collected and elicited by smartphones from your life.
24、 ……Who will be most likely to suffer form (2分) 正确答案:C. Individuals keeping the information about their proficiency to themselves.
25、 ……Why will many people start to hate Big Data according to the (2分)
正确答案:B. Because they facilitate performance and productivity assessment.
26、 What can be inferred form Paragraph 1 about criticisms…… (2分)
正确答案:C. The criticisms mainly focus on the quality of non-university programs.
27、 Which of the following is closest in meaning to the underlined word…… (2分)
正确答案:C. Achievement
28、 What can be inferred from Paragraph 3? (2分)
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