【题目】阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。Blood donations save lives. But blood can only be stored under refrigeration for up to six weeks.Afterthatts no longer usable fo transfusions. Because of ha imittion,peopl haveto contnuallydonate blood to meet the needs...
Blooddonationssavelives.Butbloodcanonlybestoredunderrefrigeration(冷藏)foruptosixweeks.Afterthat,it'snolongerusablefortransfusions(输血)."Becauseofthatlimitation,peoplehavetocontinuallydonatebloodtomeettheneeds.Butalso,inplaceswhererefrigerationmaynotbeavailable,thatcanalsobeachallenge.It'sdifficulttohavebloodavaila...
(路易斯维尔大学生物工程师Jonathan Kopechek表示,由于COVID-19,暂停定期献血给血液供应带来了压力,这场大流行突显出对更可靠的长期储存方法的需求)"中讲到COV ID-19造成暂停定期献血(suspension to regular blood donations),结合前文可推知,我们现有的血液储存方式存在缺陷,容易受到影响,我们需要更可靠的血液储存方式...
【题目】Blood donations save lives. But blood can only be stored by freezing for up to sir weeks. "Because of that limitation, people have to continually donate blood to meet the needs.But also, in places where freezing may not beavailable, that can also be a challenge. It's difficult ...
根据划线部分语句“The disruptions to regular blood donationsdue to COVID-19 have put stress on the blood supply,”由于COVID-19病毒对常规献血的干扰,给血液供应带来了压力,以及第一段中“blood can only be stored byfreezing for up to six weeks”血液只能冷藏六周。再结合常识,疫情期间人们都是居家...
【题目】Blood donations save lives.But blood can only be stored by freezing for up to six weeks. "Because of that limitation , people have to continually donate blood to meet the needs.But also, in places where freezing may not be available ,that can also be a challenge.It's difficult ...
这里是科学美国人——60秒科学系列,我是苏珊娜·巴德。 Blood donations save lives. But blood can only be stored under refrigeration for up to six weeks. After that, it's no longer usable for transfusions. 献血可以挽救生命...
Previous policies to prevent HIV infected donations profiled donors according to sex and ethnicity. These policies have changed. But the negative perceptions linger. Manybelievethat blood products from African donors, particularly products containing cells, are discarded and not used. ...
Since its opening, Guangzhou United Family Hospital has consistently fulfilled its commitment to serving the community by donating a total of more than 300,000 milliliters of blood, placing it at the top of the list of blood...
There is a great need forblood donations(献血) around the world, and you can be themeans(方法,途径) ofsaving lives(挽救生命). According to the American Red Cross, over 40,000 blood donations are needed every single day in the United States alone, and without the help ofvolunteers(志愿者...