题目内容

If students don't understand an important part of the lesson, __________．
[A] they had better not to ask teachers to explain it
[B] teachers may be impatient with them
[C] they should ask other students for help
[D] teachers would gladly explain the things to them again

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学科标准是指课程计划中每门每科以纲要的形式编写的、有关学科教学内容的指导性文件，也称（）

The businessmen for baby exercises are cautious about setting a goal because __________．
[A] they will have been fined if they make any claims
[B] it is hard for them to find a specific and feasible one
[C] they have learned a lesson from previous experiences
[D] they only attach importance to short-term development

The word "ubiquitous" in Paragraph 4 is close in meaning to __________．
[A] prevailing
[B] obvious
[C] notorious
[D] disastrous

[A] desirable
[B] resistible
[C] respectable
[D] agreeable