—Yes, it is.”
朗读这组问答句的正确声调是_______.
A:— Is this your↘notebook? —↘Yes, ↗it is.
B:— Is this your↘notebook? — ↗Yes, ↘it is.
C:— Is this your↗notebook? —↘Yes, ↘it is.
D:— Is this your↗notebook? — ↗Yes, ↘it is.
在《舌尖上的中国》第二季第一集《脚步》中,介绍了我国不同省区的美食。读图,完成以下问题。
∫01ex+xdx 等于( )