【单选题】Since the 1950's, literary critics have attempted to answer the question: When did children's literature first emerge as a distinct literary genre?
【判断题】组成同一个构件的零件间不能存在相对运动。
【单选题】The happy student was singing ____ he was going home. [ ]
【单选题】The following statements are true about the loss of the Arctic ice EXCEPT that ______
A.
the loss of the Arctic ice will affect both animals living there and all human beings
B.
the loss of the Arctic ice will make us feel warm in summer and cold in winter
C.
the Greenland Ice Sheet will melt and lose mass
D.
the Arctic ecosystem will become disordered
【简答题】已知函数f(x)= lo g 2 1+x 1-x . (1)求函数f(x)的定义域; (2)判断函数f(x)的奇偶性,并证明; (3)判断函数f(x)在定义域上的单调性,并用定义证明.
【单选题】我国《混凝土结构设计规范》GB50010-2010(2015年版)所采用的设计基准期是( )
【简答题】英汉互译。 1. listen to __________ 4. 关掉 __________ 2. turn up __________ 5. 中国音乐 __________ 3. turn on __________ 6. 另一个节目 __________
【简答题】forms slowly beneath other types of ice __________
【简答题】已知函数f(x)=2 x -2 -1,求函数f(x)的定义域与值域。
【简答题】I’m good at singing. I’ve been interested in music and dreamed of become a singer ever since my childhood. My parents began to teach me children’s songs until I was only three. After I started school ...