The correct one of the following punctuation marks is () A. How many grams of carbon dioxide can be produced by the reaction of A.200 ml of 38% hydrochloric acid with enough marble?

A

The

The correct one of the following punctuation marks is () A. How many grams of carbon dioxide can be produced by the reaction of A.200 ml of 38% hydrochloric acid with enough marble?

A

The "Youth Self-study Series" in item B does not need a title, but a reference. Keep one of the "and" and the ellipsis in item C. If you keep the ellipsis, you should change "and" to pause. The period "If you see a question somewhere, you can enter it" after item D should be changed to a comma and placed outside quotation marks.