—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.
《望庐山瀑布》表达了作者怎样的思想感情?
如图,E、O、A三点共线,OB平分∠AOC,∠DOC=2∠EOD,已知∠AOB=30°.求∠EOD的度数.