正确答案:C
解析:问题问的是:根据第一段,正确的是哪一项?第一段中提到,没有疫苗和药物能预防或治愈登革热,只有消灭所有携带病毒的蚊子才能防止被感染。由此可见,C选项正确
2.The special mice used in the lab test
A.have red eyes.
B.are kept in an ordinary open room.
C.are put in the room with lots of mosquitoes.
D.have been altered so that they can easily infected by human diseases
正确答案:D
解析:问题问的是:试验中用到的特别的老鼠是怎样的?A选项错误,第三段第一句提到老鼠眼睛是粉色的;B选项错误,第三段提到,老鼠被置于特殊的与病菌隔离的房间里,与选项中说的普通的开放的房间矛盾;C选项错误,文中提到老鼠体内的病菌是研究人员注射植入的,老鼠并没有与蚊子放在一起。而 D中的easily infected正是第三段最后一句中susceptible的同义词,意为易感染的。因此,D正确
3.According to the report, the virus strains that cause the more severe dengue and hemorrhagic fever are actually
A.of a specific genetic variant..
B.from a special mosquito.
C.invented in the lab.
D.killable with a specific genetic variant
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