在教育评价体系中，处于核心地位的是（）

Which of the following shows the proper pronunciation of the segment””did you”” in connected speech?　

There are some speaking activities. Which of the following mainly focuses on the form and accuracy?

把学习成就看作是赢得地位和自尊的根源，这是一种（）

UR1的含义是( )。