题目内容

某行业的进入屏障越低,则潜在加入者构成竞争威胁就越大

A. 对
B. 错

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当某一行业的产品差异程度高时,竞争也就比较缓和

A. 对
B. 错

To make our companies __________________ in the market, we have to be more creative and productive. People are beginning to realize that to ___________ nature at will is the biggest mistake that man has ever made. It is difficult to conclude what a(n) ___________ student does in his spare time because every student has different interests.4. A month ago I wrote to the store complanin about its bad service, but I haven't gotten a(n)___________ yet.5. Some of your suggestion have been ___________, but others have been turned down as they arenot workable.6. All of a sudden, he lost his interest in engineering, and _________ his attention on learning aforeign language.7. If a company decreases health benefits for its employees, they should increase salaried to ________ the workers.8. I failed to pass the exam although I had worked very hard. I should __________ the causes fo my failure.9. When you do yoga, try to ___________ your breathing. Don't breathe too fast and make sure you breathe only through your nose.10. It was difficult to __________ how many people had been wounded in the earthquake.responsetransformfocus analyze estimate competitivecompensate adopt typical regulate

从受精卵开始直到幼虫或幼体从卵膜内孵化或从母体产出为止的整个过程,称()。

A. 胚后发育
B. 胚胎发育
C. 胚前发育
D. 个体发育

两性繁殖生物体的个体发生过程包括哪几个阶段?

A. 胚后发育
B. 胚胎发育
C. 胚前发育
D. 个体发育

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