New ideas sometimes have to wait for years ______ they are fully accepted.

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问题 New ideas sometimes have to wait for years ______ they are fully accepted.

选项 A、when
B、before
C、after
D、where

答案B

解析考查时间状语从句。before引导时间状语从句时表示主句的动作发生在从句动作之前，一般译为“……才……”，句中主句的动作wait发生在accept之前，故选B。when引导的时间状语从句，表示“当……时候”；after引导时则与before相反，表示主句的动作发生在从句动作之后。

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专业英语四级

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New ideas sometimes have to wait for years ______ they are fully accepted.

专业英语四级

Wedepartedearlyinorderthatwe______totheharborintime.

Oneway______whatascientistdoesistobeginwiththethingsyoudo.

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Thesocietyisunstable,fullofcriminalcases,soyoucan’tbe______careful.

Educationistooimportanttotake【C1】,whenpeopletakeanythingforseriously,theyput【C2】blinderswhichcaus

Educationistooimportanttotake【C1】,whenpeopletakeanythingforseriously,theyput【C2】blinderswhichcaus

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男，26岁。排柏油便2天，加重伴头晕、心悸半天急诊入院。既往无肝病史，近期无服药史。体格检查：血压70／40mmHg，心率118次／分，腹软，无压痛，肝、脾肋下未触及，四肢末梢发凉。首选的处理是()

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Sportsandgamesmakeourbodiesstrong,preventusfromgettingtoofat,andkeepushealthy.Butthesearenottheironlyuse.

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男，26岁。排柏油便2天，加重伴头晕、心悸半天急诊入院。既往无肝病史，近期无服药史。体格检查：血压70／40mmHg，心率118次／分，腹软，无压痛，肝、脾肋下未触及，四肢末梢发凉。首选的处理是()

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女式真丝睡衣(针织)

Sportsandgamesmakeourbodiesstrong,preventusfromgettingtoofat,andkeepushealthy.Butthesearenottheironlyuse.

Whatthedoctorsreallydoubtis______mymotherwillrecoverfromtheseriousdiseasesoon.

Educationistooimportanttotake【C1】,whenpeopletakeanythingforseriously,theyput【C2】blinderswhichcaus

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第一个口服有效的ACEI为。ACEI通过减少生成、降解以及分泌等途径发挥降压作用。