虽然她对去某些地方的最佳路线并不清楚,她却坚持要自己把这次旅游安排得尽善尽美。
Although she didn't know the best way of getting to places, she insisted that she organize the trip properly.
— Could you help me put up the painting on the wall?
— ______
动脉中血液流动的方向是 ( )
空气中PM2.5的含量是检验环境空气质量的重要指标,PM2.5颗粒能通过呼吸系统进入血液,危害人体健康.PM2.5颗粒经过鼻、咽、喉以后,在进入血液之前,还会经过的结构依次是( )
下列关于热现象的说法中正确的是( )