【单选题】下面哪一个选项是错误的( )
A.
强化技能有多种类型,包括语言强化、行为强化等。
【单选题】What have we replaced fossil fuels with?
A.
We now use alternative forms of energy.
B.
We now use alternative forms of transport.
C.
We only have three billion cars on the road.
【判断题】罗马万神庙平面为圆形,穹顶直径43.3m,顶端高度43.3m,穹顶中央开一个直径8.9m的圆洞。 穹顶的做法:先用砖沿球面砌几个大发券,然后分段浇筑混凝土,这样可防止混凝土在凝结前下滑,并避免混凝土收缩时出现裂缝,为减轻穹顶重量,越往上越薄,并在穹顶内面做六圈深的凹格,每圈28个,混凝土用浮石作骨料。
【简答题】In the 2nd version we learn that we have _____ our use of ____ ____ such as oil, gas and coal by nearly 80% over the last 50 years. We have replaced them now with a number of ______ forms of energy, s...
【简答题】强化可以改变幼儿对注意对象的选择。____
【单选题】What have we replaced fossil fuels with?
A.
We now use alternative forms of energy
B.
We now use alternative forms of transport
C.
We only have three billions cars on the road.
【单选题】下面哪一个选项是错误的:
D.
荷兰“风格派”是影响包豪斯教学理念的风格之一
【单选题】We have replaced the broken china sets. __________, we offered you a 3% discount.