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【多选题】
关于编写关键词下列哪些说法是不正确的（）A.
是一篇论文重要的信息点和检索点
B.
关键词排列在摘要之前，另起一行书写
C.
选取最能表达其主题中心内容的实诃作为关键词
D.
标引时要考虑词的规范化
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反馈参考答案：
举一反三
【单选题】I'd like you to for me the main point of Professor Ma's talk. [ ]
A.
offer
B.
explain
C.
stress
D.
summarise
【单选题】When we categorize fruits into spring fruits, summar fruits, fall fruits and winter fruits, we're dividing them based on ( ).
A.
Season
B.
Alphabet
C.
Location
D.
Meaning
【单选题】Lady Wang _____as a secretary for five years in the company, and now she is a general manager of it.
A.
has served
B.
serves
C.
had been serving
D.
served
【简答题】Listen to a talk about light and health. Take notes and complete the following summar y. Can Light Affect Your Health? Many researchers believe that __________ can __________ both your __________ and ...
【简答题】“I’m sy years old,” says the gray-haired lady proudly to the entertainer at her Community Club dinner. “Did you hear that, everyone?” says the entertainer. “This lovely lady is just sy years...
【单选题】有关抽样误差的叙述，不正确的是
A.
抽样误差是由随机抽样而造成的
B.
抽样误差的存在是不可避免的
C.
抽样误差可通过科学地调查研究设计加以控制
D.
抽样误差可应用统计学方法加以估计
E.
抽样误差最常用的指标是标准差
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