本题目来源于试卷: SL Topic C3.2 Defence against disease，类别为 IB生物学
[问答题]
d. Does the data tend to;,lz1 z )n2djs/x+xm pm yifc*. d9tlt support the;ij*vkf :f gxpt;:tp: hypothesis that the use of a vaccination can :jkp if:pt*:gv;x; ft completely eradicate a disease?
参考答案: Hypothesis is supported by:
As the percentage vaccinated approaches 100%, the number of infections will tend to zero. Hypothesis is not supported by:
There is no evidence that the percentage vaccinated will reach 100%/no evidence that if tthe percentage vaccinated reaches 100% that infections will be eradicated. It is possible that an immunised child could contract measles. / Vaccination does not always prevent infection. (Note: each supporting point must correctly match the support or non-support of the
hypothesis).
本题详细解析:
暂无
| 
