题目

Rest is critical to life and work and a positive attitude towards rest needs to be maintained. Enough rest is significant to our body and mind   36   a lack of adequate rest, as well as  __37__ attitudes to rest, will do great harm to our health.     Rest is vital to our ability to   38   at our best. Recent news stories report that scientists are learning surprising things about the importance of sleep. There is enough __39_  suggesting that rest will refresh us,  40   our body and mind to work efficiently. Besides, rest is important for   41   that; it is helpful in setti我国的植物资源十分丰富，其中被称为植物界的“大熊猫”的植物是（ ）A．银杉 B．水杉 C．珙桐 D．桫椤