首页
登录
职称英语
Which of the following is true about the immunity to HIV? [originaltext]About 10
Which of the following is true about the immunity to HIV? [originaltext]About 10
游客
2025-01-18
21
管理
问题
Which of the following is true about the immunity to HIV?
About 10 percent of Europe’s present-day population seems to be resistant to HIV -- a significantly higher proportion than on other continents. Researchers have traced this immunity to a genetic mutation that seems to have appeared some 2,500 years ago, and that protects white blood cells against penetration by HIV. From the mid-14th century through the 17th century the prevalence of the mutation increased, in tandem with repeated outbreaks of the plague. The researchers suggest that the mutation protected against the disease, which culled the population of people who lacked it.
选项
A、It is partly resistance to the mutation.
B、More Europeans have it than the people on other continents.
C、It is the result of outbreaks of the plague.
D、It is a mutation that protects white blood cells.
答案
D
解析
掌握篇章结构形成的意义上的内在逻辑,支持性细节往往具体说明或解释主题。
转载请注明原文地址:https://tihaiku.com/zcyy/3917469.html
相关试题推荐
[originaltext]GlacierNationalParkinMontanasharesboundarieswithCanad
[originaltext]GlacierNationalParkinMontanasharesboundarieswithCanad
[originaltext]GlacierNationalParkinMontanasharesboundarieswithCanad
[originaltext]Peopleappeartobeborntocompute.Thenumericalskillsof
[originaltext]Peopleappeartobeborntocompute.Thenumericalskillsof
[originaltext]Onceasocialtaboo,loveacrossthecolorlineisbecomingi
[originaltext]Onceasocialtaboo,loveacrossthecolorlineisbecomingi
[originaltext]Onceasocialtaboo,loveacrossthecolorlineisbecomingi
[originaltext]Onceasocialtaboo,loveacrossthecolorlineisbecomingi
Whichofthefollowingstatementsistrueaccordingtowhatyouhear?[br][ori
随机试题
Themostnoticeabletrendamongtoday’smediacompaniesisverticalintegrat
StudyStylesYouknowwhetheryou’reamorning
[originaltext]M:Ineedthreestampsandanenvelope,please.W:Sorry,sir.Y
[originaltext]IntheUnitedStatesmanyhavebeentoldthatanyonecanbeco
通货膨胀对投资具有抑制作用。()
防火门监控器的功能有()。A.信息记录、查询和上传功能 B.自检功能
以下对现代舞特点描述不正确的是()A.主张脱离现实生活和单纯追求技巧的形式
已知集合A={x|x2-3x-4>0},集合B={x|m+1≤x≤4m},若B?
王先生委托×房地产经纪公司购买一套商品住房供自己居住。该房地产经纪公司的执业房地
(2015年5月)奖金的特点有()。A.特殊性 B.单一性 C.灵活性 D
最新回复
(
0
)