幼儿的具体形象思维有哪些特点？
参考答案：
（1）思维动作的内隐性；
（2）具体形象性；
（3）自我中心性。
It is impossible that you achieve your goal without effort, ?
A．don’t you
B．is it
C．isn’t it
D． do you
Each Web ______ has its own unique address known as a URL(Uniform Resource Locator).
A．server
B．point
C．computer
D．site
