【单选题】( )创立了世界上第一个为母亲们开办的“讲习会”,后来还专门写了一本《母亲之歌与爱抚之歌》,特别推崇亲子教育:
【单选题】The computer is in ______ bad condition ______ I can't work with it.
【简答题】已知一个碳原子上连有两个羟基时,易发生下列转化: 请根据下图回答。 (1)E中含有的官能团名称是___________;③的反应类型是_____________。 C的结构简式为____________;C跟新制的氢氧化铜反应的化学方程式为__________________________________________; (2)在化学上某些分子的式量可以辅助我们推断该分子组成,已知B(C x ...
【判断题】赫茨伯格提出了双因素理论,他认为,最好的激励方式是保健因素。()
【单选题】The competitive firm's short-run supply curve
A.
a. is its marginal revenue curve, but only the portion where marginal revenue exceeds marginal cost.
B.
b. is its marginal cost curve.
C.
c. is its marginal cost curve, but only the portion above the minimum of average total cost.
D.
d. is its marginal cost curve, but only the portion above the minimum of average variable cost.
【单选题】The main idea of the passage is about ______.
A.
the present condition and the prospect of TV programs
B.
soaps' decline in viewers
C.
profits got by soaps through advertisements
D.
a brief introduction of soaps