READ OUT LOUD. Choose which marked text you prefer to practice with - macrons or accent marks - and read the text out loud until you feel comfortable and confident. Then, try reading the unmarked text at the bottom. It should be easy for you after practicing with the marked texts. :-)
MACRONS. Here is the text with macrons:
Gallus quondam margarītam rādendō inventam gemmāriō quam prīmum dedit. Maximī, inquit, pretiī istam quidem crēdō, sed mihi maiōris erit minimum frūmentī grānum. Item homō rudis indoctusque cōdicem manū scriptum, quī sibi hērēditāte vēnerat, ad vīcīnum bibliopōlam tulit. Optimum, inquit, istum quidem crēdō, mihi autem plūris est nummulus quīlibet.
ACCENT MARKS. Here is the text with ecclesiastical accents, plus some color-coding for the words of three or more syllables (blue: penultimate stress; red: antepenultimate stress):
Gallus quondam margarítam radéndo invéntam gemmário quam primum dedit. Máximi, inquit, prétii istam quidem credo, sed mihi maióris erit mínimum fruménti granum. Item homo rudis indoctúsque códicem manu scriptum, qui sibi hereditáte vénerat, ad vicínum bibliopólam tulit. Óptimum, inquit, istum quidem credo, mihi autem pluris est númmulus quílibet.
UNMARKED TEXT. Here is the unmarked text - after practicing with the marked text that you prefer, you should not have any trouble with the unmarked text; I've inserted spaces between the segments to make it easier to follow:
Gallus quondam
margaritam radendo inventam
gemmario
quam primum dedit.
Maximi, inquit, pretii
istam quidem credo,
sed mihi maioris erit
minimum frumenti granum.
Item homo rudis indoctusque
codicem manu scriptum,
qui sibi hereditate venerat,
ad vicinum bibliopolam tulit.
Optimum, inquit,
istum quidem credo,
mihi autem pluris est
nummulus quilibet.
IMAGE. Here is the illustration of the fable by Aractingy:
