前苏联教育家巴班斯基提出“教学过程最优化”理论。这一理论主张,教学过程需要以高难度、高速度进行教学,要理论知识起主导作用的情况下,要使全班学生都能得到“最优化”发展。
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Listen carefully and choose the word you hear.
A. shoe
B. chew
Which of the following letter or letter group can be pronounced as /ʒ/?
A. s
B. z
C. ng
D. si
Listen carefully and choose the consonant you hear.
A. /ʃ/
B. /ʒ/