A man escaped from the prison last night. It was a long time ______ the guards discovered what had happened.

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问题 A man escaped from the prison last night. It was a long time ______ the guards discovered what had happened.

选项 A、before
B、until
C、since
D、when

答案A

解析考查It is...before的用法。犯人越狱发生在警卫发现之前，It is...before意为“(……之后，)才……”，符合题意，为正确答案，又如：It was several months before I was fit for the job．(几个月后我才适应了这工作。)until意为“直到……为止，直到……才”，一般不用于It is...until肯定句中，例如：They drank on until midnight(他们一直喝到半夜。)

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专业英语四级

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A man escaped from the prison last night. It was a long time ______ the guards discovered what had happened.

专业英语四级

What’stheagreementbetweenthegovernmentandtheunionleadersabout?

Whatdoesthispassagemainlydiscuss?

Whattwoholidaysarementionedinthepassage?

Scientistsaroundtheworldareracingtolearnhowtorapidlydiagnose,treatandstopthespreadofanew,deadlydisease.SAR

Apparently,theyare______happytohearofhissuccessfulescapefromtheprison.

Nowadaysgroupsofscientificworkers,often【C1】bytheirgovernments,spendtheirtime【C2】theoccurrenceofearthq

Nowadaysgroupsofscientificworkers,often【C1】bytheirgovernments,spendtheirtime【C2】theoccurrenceofearthq

Nowadaysgroupsofscientificworkers,often【C1】bytheirgovernments,spendtheirtime【C2】theoccurrenceofearthq

Watercoloristheoldestpaintingmediumknown.Itdatesbacktotheearlycavedwellers’whodiscoveredtheycouldaddlifelike

AgeismAmericansocietyhasbeendescribedasmaintainingastereotypicandoftennegativeperceptionofolderadults.This

45岁肺结核患者，3天前开始咳嗽，痰中带血。今天上午突然大口咯血，量约100ml，查体未见异常。ECGⅡ、Ⅲ、AVF导联ST段下移＞0.5mV，T波低平。对其治疗下列哪项不正确（）

心血虚证与心阴虚证的共见症状是

女，26岁。反复出现皮肤瘀点，并有鼻衄，月经过多，近日来出现贫血、脾大、血小板30×109／L，以下护理措施错误的是()。

某膨胀土场地测得：自由膨胀率为65％，蒙脱石含量为16％，阴离子交换量为300mmol／kg，其膨胀潜势分级为()。

在财产清查中，通过“账存实存对比表”发现：账存甲材料100000元，实存甲材料110000元，原因待查，在未批准处理前，下列账务处理中正确的是()。

基金利润分配后，基金份额净值()，投资者的利益()。

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A man escaped from the prison last night. It was a long time ______ the guards discovered what had happened.

专业英语四级

What’stheagreementbetweenthegovernmentandtheunionleadersabout?

Whatdoesthispassagemainlydiscuss?

Whattwoholidaysarementionedinthepassage?

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Apparently,theyare______happytohearofhissuccessfulescapefromtheprison.

Nowadaysgroupsofscientificworkers,often【C1】______bytheirgovernments,spendtheirtime【C2】______theoccurrenceofearthq

Nowadaysgroupsofscientificworkers,often【C1】______bytheirgovernments,spendtheirtime【C2】______theoccurrenceofearthq

Nowadaysgroupsofscientificworkers,often【C1】______bytheirgovernments,spendtheirtime【C2】______theoccurrenceofearthq

Watercoloristheoldestpaintingmediumknown.Itdatesbacktotheearlycavedwellers’whodiscoveredtheycouldaddlifelike

AgeismAmericansocietyhasbeendescribedasmaintainingastereotypicandoftennegativeperceptionofolderadults.This

45岁肺结核患者，3天前开始咳嗽，痰中带血。今天上午突然大口咯血，量约100ml，查体未见异常。ECGⅡ、Ⅲ、AVF导联ST段下移＞0.5mV，T波低平。对其治疗下列哪项不正确（）

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存款业务按客户类型，分为个人存款和()。

我国《继承法》第16条第2款规定：公民可以立遗嘱将个人财产指定由法定继承人的一人或者数人继承。从法的规范作用看，该项规定属于下列哪种情况?()

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Nowadaysgroupsofscientificworkers,often【C1】bytheirgovernments,spendtheirtime【C2】theoccurrenceofearthq

Nowadaysgroupsofscientificworkers,often【C1】bytheirgovernments,spendtheirtime【C2】theoccurrenceofearthq

Nowadaysgroupsofscientificworkers,often【C1】bytheirgovernments,spendtheirtime【C2】theoccurrenceofearthq