问题题干答案解析相关问题热门问题最新问题

问题详情

By careful examination, the doctors hope to ____ the source of the infection.( )

A、make sure

B、set off

C、get up

D、track down

时间：2021-09-01 22:41 关键词：河南科技大学大学英语

答案解析

D

相关问题

Following a collision or accident，the Master of each vessel involved must render assistance to persons affected by the collision or accident（）.
the hero was distinguished by his accomplishment; the celebrity by his appearance or characteristics.
By careful examination, the doctors hope to ____ the source of the infection.( )
__________ is the act performed by or resulting from saying something; it is the consequence of, or the change brought about by the utterance.
[选择题,2分] the hero was distinguished by his accomplishment; the celebrity by his appearance or characteristics.