The rodent, ______ the mouse, rat, guinea pig, and porcupine, are mammals with incisor-like teeth in both jaws.

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问题 The rodent, ______ the mouse, rat, guinea pig, and porcupine, are mammals with incisor-like teeth in both jaws.

选项 A、made up
B、including
C、consisting
D、constitute

答案B

解析 made up of由……组成,构成(着重指有许多构成成分及组件等,常用被动语态),如:Life is made up of bobs,sniffles and smiles.生活是由啜泣,抽噎和微笑组成的。include包含,包括(侧重包含的只是整体的一部分;用分词时,常引入一个解释性短语),如:The tour included a visit to the Science Museum.旅游项目中包括参观科学博物馆。consist of由……组成,如:Our school consists of 20 classes.我们学校是由20个班级组成的。Constitute组成,构成,如:Seven days constitute a week.七天为一星期。因此答案应为B。句意为:包括耗子、老鼠、天竺鼠和豪猪在内的啮齿类动物是哺乳动物,它们的上下颚都长有切牙。
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