1. ............. of Iranians speak one of the Indo-European languages.

third- fourths

three-fourths

second- fourths

fifth- fourths

2. more than half the population speak a dialect of .............. .

Persian

Indo

Irish

Afro

3. Persian is also the predominant language of ............. .

journalism

literature

science

all is right

4. The Kurds and Turkmen are predominantly .............. .

jews

Sunni

Shīʿite

christians

5. the majority of the community persons are ............. .

jews

muslims

christians

Zoroastrians

6. About one-third of its 4,770-mile (7,680-km) boundary is .............. .

desert

seacoast

valleys

green plateaus