有效的开展献血者教育、鼓励和征募活动的长期效应是由于()人数增加而带来充足的血液供应。
A、家庭替代献血者C
暂无解析
蓝光灯照射不正确的方法是（）
重写句子：Alanpassedthetest.Alanhadstudiedhard.Alanhadunderstoodthematerial.(complexsentence)
Thefurnitureinherbedroomisquitedifferentfrom________inthelivingroom.
Hewouldhavegivenyoumorehelp,ifhe________sobusy.
Inordertobuyanewcar,youshouldatleast______onehundreddollarsaweek.
