【单选题】Big companies have the advantage of______.
A.
making complex networks work in a coordinated way
B.
reducing the cost by producing things in large quantities
C.
being able to integrate innovations across complex systems
D.
controlling human behavior. with imposed restraints on creativity
【单选题】The US/UK war against Iraq and the suffering _____ caused have become a big concern all over the world.
【单选题】下列描述不属于毛细血管特征的是( )。
E.
毛细血管具有一定的通透性,便于组织与血液进行气体交换
【简答题】如图是呼吸系统模式图,请据图回答: (1)首先对吸入气体有过滤,湿润和温暖作用的结构是[______]______. (2)3是______,既属于______ 系统,又属于______ 系统,因有______,它成为食物和空气共同的通道. (3)痰是由[______]______和[______]______内表面的粘膜所分泌的粘液,以及被粘液粘着的灰尘和细菌等组成. (4)进行气体交换的器官是...
【单选题】The author feels nervous when making big decisions because he______.
A.
is born indecisive and irresolute
B.
dislikes making definite decisions
C.
lacks enough intelligence to do so
D.
attempts to avoid the ensuing regrets
【单选题】未母乳喂养或未做到及时有效的母乳喂养的产妇,通常可于产后3〜4d因乳房血管、淋巴管极度充盈可有发热,称为( )