【多选题】当SMC达到最低点时,下列正确的是的( )。
【单选题】Your grandfather is rather tired so do not ______ your visit.
【简答题】当SAC达到最低点时,下列哪一条是正确的:A. AVC=FC B.SMC=SAC B. P=AVC D.P=SMC
【单选题】(4)以下植物的果实或种子靠风力传播的是( )。
【单选题】—Your grandfather is always full of .What’s the secret? —Playing Taiji every morning.
【简答题】—Your grandfather is always full of( ).Do you know the secret?一Well,he takes exercise every morning and keeps healthy diets.A. force B. power C. strength D. energy
【简答题】概率论的研究对象是(),研究目的是(),研究方法是()
【单选题】Trying to explain rock music to your grandfather is just like dui niu tan qin ( 对 牛 弹琴 )-playing violin to a bull. The corresponding English expression is .
A.
casting pearls before swine
B.
casting diamonds to a dog
C.
throwing pearls to a pig
D.
throwing diamonds to a goat
【简答题】Be quiet, please! Your grandfather is _________(sleep) in the bedroom.