——Which of the following words has the same sound as the “ed” in the word “danced”?——Let me see. That's .
A:passed
B:listened
C:chatted
D:needed
根据拼音写汉字。
níng____成 昏yūn____
现代的家庭电路主要由进户线、量电装置、配电装置以及____ 和____ 组成.
一木块漂浮在水面上时,露出2/5的体积,求该木块的密度.