布鲁纳认为,个体认知表征的方式随年龄而发展,并分为几个阶段?()
A.认知表征阶段;
B.动作表征阶段;
C.形象表征阶段;
D.符号表征阶段
参考答案:B, C, D
Things made by hand are usually more expensive than _ produced in factories.
A.these
B.this
C.that
D.those
You can buy ________ you want on the Internet. [ ]
A. something
B. everything
C. anything
D. nothing