What was the effect of the vaccine developed by the Mexican government-考呗网

英语六级

单选题What was the effect of the vaccine developed by the Mexican government and WHO in 1952?

A．It was a failure in the experiment
B．It completely destroyed vampire bats
C．It eliminated the virus of rabies altogether
D．It successfully protected the cattle from being infected with rabies

参考答案：D进入在线模考

细节题。根据题干关键词可定位至文章第四段，A quarter of a million cattle have been vaccinated at a cost of fifty cents per animal to the owners．In one state alone．death among cattle has fallen from 56％to 1％(25万头牛接受了疫苗接种，代价就是每头牛50美分。这样，牛的死亡率从56％下降到了1％。)可知接种疫苗后．牛的死亡率大幅下降。因此，正确答案是D。

你可能感兴趣的试题

1According to this passage, rabies is a disease which_____

A．is still a mystery
B．can be controlled
C．has been eliminated
D．is impossible to deal with

点击查看答案进入在线模考

2 This passage mainly discusses_____

A．rabies which is harmful to people
B．the vaccine which could control rabies
C．vampire bats which spread rabies
D．different efforts people made to kill empire bats

点击查看答案进入在线模考

3中国画是世界上最古老的艺术传统之一。传统的绘画在今天被称为国画，意思是与20世
纪在中国流行的西洋油画相对的“民族的”“本土的”画。传统的绘画本质上和书法的技法相同。用毛笔蘸黑色或彩色的墨水画，而不是用油彩。与书法一样，最常用的绘画材料是纸和丝绸。早期的绘画主要是装饰而不是再现世界，主要是图案而非图画。在唐朝，人物画在宫廷里盛行。艺术家周昉在他的帝王画、宫女画和御马画中展现了宫廷生活的盛况。

点击查看答案进入在线模考