【題目】We made a survey among 1,000 middle school students about their masks (口罩)for the coming school days. In general, every student will prepare 200 masks for it. The form below shows that the number of each student’s medical masks is________as large as that of Kn95 respirators (Kn95口罩).

surgical (外科) masks

(medical)

disposable（一次性）masks

（medical）

Kn 95 respirators

100

50

?

A.twiceB.three timesC.four times

【答案】B

【解析】

句意：我們對1000名中學(xué)生進(jìn)行了一項(xiàng)調(diào)查，詢問他們在即將到來的學(xué)校生活中需要佩戴哪些口罩。一般每個(gè)學(xué)生都會(huì)準(zhǔn)備200個(gè)口罩。下面的表格顯示每個(gè)學(xué)生的醫(yī)用口罩的數(shù)量是Kn95口罩?jǐn)?shù)量的3倍。

考查數(shù)學(xué)計(jì)算能力。根據(jù)“every student will prepare 200 masks for it”及表格中的數(shù)據(jù)，可知醫(yī)用口罩的數(shù)量是150個(gè)（一次性醫(yī)用+醫(yī)用外科），那么Kn95口罩的數(shù)量是50個(gè)，所以每個(gè)學(xué)生的醫(yī)用口罩的數(shù)量是Kn95口罩?jǐn)?shù)量的3倍，故選B。

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