这句英语有错误否 changer啥意思?67.Scientists do not know why dinosaurs became extinct,but some theories postulate that changers in geography,climate,and sea levels were responsible.67.科学家不知道恐龙为何绝种了,但是一些理论推断是地理,气候和海平面的变化造成的.changer是不是应该改成change?
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空处涉及宾语从句的谓语动词,且事情发生在过去,应用一般过去时;extinct“灭绝的”是形容词,不能作谓语,故A项错误;B项became extinct是系表结构,且为一般过去时;C项came into extinction是动词短语加宾语,且为一般过去时;D项died out是动词短语,且为一般过去时。综上,故选A。
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亲，很高兴为您服务哦这是一个宾语从句哦 主语I，wonder 谓语,宾语是why引导的从句
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Why Dinosaurs Became Extinct
在您接受了物品之后,您是否会给我们确认? [translate] ashipment for Global? 发货为全球性? [translate] avfdsdf vfdsdf [translate] aScience can help us explain why dinosaurs are extinct now. 科学可能帮助我们解释为什么恐龙现在绝种。 [translate] ...
climates around the world became dramatically more extreme: warmer days, cooler nights; hotter summers, colder winters. Perhaps nonavian dinosaurs (that is, all the dinosaurs except those belonging to the Ave, or bird, family) could not tolerate these extreme temperature changes and became extinct....