【单选题】慢性泪囊炎是因为下列哪个部位阻塞伴发细菌感染所致
【单选题】______ is often acclaimed literary spokesman of the Jazz Age .
【单选题】The children played under the watchful _____ of their father.
【简答题】两个数相乘,如果一个因数增加2,积就增大1.4;如果另一个因数减少6,积就减少7.8。这两个数的和是多少?
【单选题】一个因数是5,另一个因数是6,积是多少?列式是 [ ]
【简答题】A.claimed B.exclaimed C.reclaimed D.acclaimed
【单选题】______is acclaimed as 'the poets' poet'.
【简答题】列式计算. (1)4个37连加的和是多少? (2)一个因数是6,另一个因数是它的4倍,它们的积是多少? (3)最大两位数的8倍比800少多少?