推理判断题。由最后一段的第三句(…but they have been in short supply and are very expensive)得知。 A. How can we know one is suffering from malaria? B. How many people are killed by malaria each year? C. Why are there so many people suffering from malaria? D. What has been done to keep people unaffected for long? 55. Which of the following questions has NOT been discussed in the passage? 55. D
主旨大意题。根据全文所讨论的内容得知,选项A, C在第二段讨论到了,选项B在第一段讨论到了。 intense
adj. 非常的
assess
vt. 确定;估计
chill
n. 寒冷
multiply
vi. 繁殖
species
n. 种类
virus
n. 病毒 resistant
adj. 抵抗的
mosquito
n. 蚊子 available
adj. 可得到的
alternative
n. 供选择的东西;替代物 seek care寻求治疗
red blood cells红血球;红细胞 malaria parasites疟原虫
attach oneself to依附于
blood vessels血管 [助读词汇] [难句理解] Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control. 结构分析:全句是and连接的并列句,and后的分句,其主语是its ability,不定式短语to change rapidly to defend itself and resist new drugs作主语的定语, has made是谓语,it是形式宾语,真宾语是to control, 形容词短语nearly impossible作宾补。
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