The correct use of punctuation marks in the following sentences is the correct use of punctuation marks in the following sentences.

Hello:

Choose C.

Hui Chong's Spring Flowers is a poem written by Su Shi in the Northern Song Dynasty.

There is also a title in the title, and a single title should be used in it.

Correction: Flowers in the Spring River is a poem written by Su Shi in the Northern Song Dynasty.

B, "You go and get it back now!" Mother said firmly, "How can you give away such a precious thing?"

There is something to say before and after, and you can't use colons after it, but commas.

Correction: "You go and get it back now!" Mother said firmly, "How can you give away such a precious thing?"

C. When I arrived in Jiangnan, I understood the benefits of these two sentences: "Miscellaneous peanut trees, swarms of warblers flying around".

correct

D, he told me: Only Cooper knows how this once barren mountain became today's prosperous world.

The whole sentence is not a question, so you can't use a question mark. In addition, a colon is not needed.

He told me that only Cooper knew how this once barren mountain became today's bustling world.