The cicadas in the forest become quieter, the birds singing in the mountains become quieter, and the shots mainly reflect the loudness, pitch or timbre of the sound.

(2012? Huli District Simulation) The poem by Wang Ji, a poet of the Liang Dynasty, "The noisy forest becomes quieter, and the bird-singing mountain becomes more secluded" is a well-known poem. The "quiet" and "secure" here mainly reflect the sound (　) A. Tone B. LoudnessC. timbre D. Speed ??of sound

A. Tone

B. Loudness

C. Tone

D. Speed ??of sound

The words "quiet" and "secluded" in the poem "The noisy cicada forest becomes quieter, and the bird singing mountain becomes more secluded" mainly refers to the low loudness of the sound;

So ACD is wrong; B Correct;

So choose B.