______much is known about what occurs during sleep, the precise function of sleep and its different stages remains largely in th

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问题 ______much is known about what occurs during sleep, the precise function of sleep and its different stages remains largely in the realm of assumption.

选项 A、Because
B、Since
C、As
D、While

答案D

解析状语从句。根据句义可知，空处所缺为让步状语从句的连接词，故选while(尽管)；much as也可引导让步状语从句，但as much不可以。

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专业英语四级

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______much is known about what occurs during sleep, the precise function of sleep and its different stages remains largely in th

专业英语四级

Thisisoneofthemostfamousnovelsthat______beenpublishedsincethewar.

Weinsistthatstudentsshouldgiveatruthfulanswer______withtherealityoftheirworld.

Couldyoupleasetellhimtogetoffmyback?Anyway,Iamnotalittlechildanymore.Theunderlinedpartmeans______.

Observationsweremade______thechildrenatthebeginningandattheendofpreschoolandfirstgrade.

High-qualitycustomerserviceispreachedbymany,butactuallykeepingcustomershappyiseasiersaidthandone.Shopperss

InAmerica,olderpeoplerarelylivewiththeiradultchildren.Butinmanyothercultureschildrenareexpectedtocare【C1】____

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