[名词解释] life table
[名词解释] current life table
[名词解释] cause eliminated life table
[名词解释] 定群寿命表(cohort life table)
[主观题]is, table, the, on, what__________________________________________________________________________?
[单选题]Is the cat ______ on the table?A.sittingB.sitC.sitsD.sat
[名词解释] life expectancy
[单选题]This table isstrong and [durable].A.long-lastingB.extensiveC.far-reachingD.
[单选题]This table isstrong and [durable].A.eternalB. far-reachingC. extensiveD. lo
[单选题]Life Vest指的是()。A . 救生手册B . 救生衣C . 氧气面罩D . 救生筏