from 18 to 24 strategic cruise missiles p-20 should have been its main impact power.

1、

once every three or four years, when conditions are right, the lake is covered with the pink birds as they stop flight to breed.

每三四年一次，当条件适宜的时候，湖面上到处都是粉红色的火烈鸟，此时它们会停止飞行进行繁殖。

六级真题- 2017年 12月 3卷阅读A

2、

they breed cattle for the market.

他们饲养牲畜以供应市场。

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3、

randomized, there are placebo-controlled, double-blind, multi-center clinical trials to prove efficacy is a reliable method.

随机分组、有安慰剂对照、双盲、多中心的临床试验，才是证明疗效的可靠方法。

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4、

the new therapy was tested in placebo-controlled clinical trials and improved alzheimer patients'memory, ability to do everyday things and overall functioning.

安慰剂对照临床试验结果表明，阿尔茨海默病患者的记忆力、处理日常事务能力及整体功能改善，验证了这一新疗法。

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5、

a randomized, placebo-controlled trial of natalizumab for relapsing multiple sclerosis

一项那他珠单抗治疗复发型多发性硬化症的随机、安慰剂对照试验

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6、

researchers conducted a randomized, double-blind, placebo-controlled study of 40 postmenopausal women ages 45 to 65 with high blood pressure.

研究者对40位45岁至65岁的绝经后高血压妇女进行了一项随机、双盲、安慰剂对照的研究。

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7、

double-blind and randomized placebo-controlled trial of cerebrolysin in improvement of nerve function and living ability in patients with ischemic stroke

Cerebrolysin改善缺血性脑卒中患者神经功能和生活能力的随机双盲研究

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8、

double-blind placebo-controlled study of autologous transplanted epidermal cell suspensions for repigmenting vitiligo

自体表皮细胞悬液移植治疗白癜风的双盲安慰剂对照研究

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9、

randomized placebo-controlled trial of early aspirin use in 20 000 patients with acute ischaemic stroke ( cast clinical trial)

全国2万例急性缺血性脑卒中早期抗血小板治疗临床对照研究结果（CAST临床试验）

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10、

randomized placebo-controlled study of the nicotinic agonist sib-1508y in parkinson disease

烟碱激动剂SIB-1508Y治疗帕金森病的随机安慰剂对照研究

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11、

we conducted a double-blind, randomized, placebo-controlled trial of sildenafil in two periods.

我们进行了一个随机双盲空白对照试验，该试验分为两个阶段进行。

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12、

urinary trypsin inhibitor in sirs and mods of critically ill surgical patients: a placebo-controlled study

蛋白酶抑制剂对外科高危病人SIRS与MODS作用的研究

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13、

oxymatrine in the treatment of chronic hepatitis b for one year: a multicenter random double-blind placebo-controlled trial

氧化苦参碱治疗慢性乙型肝炎的随机双盲对照多中心研究

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14、

double-blind, placebo-controlled study of lamotrigine in primary generalized tonic-clonic seizures

研究拉莫三嗪在原发性泛发性强直-阵挛发作中的作用

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15、

theophylline in the treatment of chronic obstructive pulmonary disease: a randomized, double-blind, placebo-controlled study

茶碱治疗慢性阻塞性肺疾病的随机双盲平行对照研究

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16、

in such situations, conventional double-blind, placebo-controlled clinical trials might not always be necessary or appropriate.

在这种情况下，并不总是需要也并不总是合适采用传统的双盲疗法和安慰疗法。

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17、

naltrexone for alcohol dependence: a double blind placebo-controlled trial

纳曲酮治疗酒依赖患者的安慰剂双盲对照研究

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18、

this study now demonstrates such an effect for a selective cox-2 inhibitor in a placebo-controlled randomized study.

现在的这项研究证实了在安慰剂作为对照的随机实验中，一种选择性COX-2抑制剂也有这种效应。

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19、

there are no randomized, placebo-controlled trials of placenta consumption.

关于食用胎盘，尚无随机、安慰剂对照试验。

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20、

oral zinc sulfate in the treatment of rosacea: a double blind, placebo-controlled study

口服硫酸锌治疗酒渣鼻：一项双盲、安慰剂对照研究

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