【判断题】对同一成分的金属,晶粒越细,其强度、硬度愈高,而且塑性和韧性也越好。
【单选题】It is implied in the passage that______.
A.
children who are good at imitating learn new words more quickly
B.
even after they have learnt to speak children still enjoy imitating
C.
children no longer imitate people after they begin to speak
D.
parents can never hope to teach their children new sounds
【判断题】对同一成分的金属,晶粒越细,其强度、硬度愈高,而且塑性和韧性也越好。
【判断题】晶粒越细小,金属的强度、硬度越高,塑性、韧性越好。
【简答题】扬州个园主要以 ___ ___ ,配合植物题材来表现四季景象