18.
it is important to know rules. but it is also necessary to know
exceptions. find the wrong variant of making plural form of a noun:
a) a leaf - leaves;
b) a roof-rooves;
6) a knife - knives;
r) a wife – wives.​

Founded: 1915Urban settlement since: 1928Town from: 1937City of regional subordinationCenter: Jewish Autonomous RegionDeviation from Moscow time, hours: 7Geographic Latitude: 48 ° 47 'Geographic Longitude: 132 ° 56 'Height above sea level, meters: 80Located on the Middle Amur Lowland, on the river. Bira (tributary of the Amur River), 172 km west of Khabarovsk. Node of. Roads and roads. Airport.
The climate is monsoon. The average temperature of January is -21 to -26.5, July +18 +21. Precipitation is 500-700 mm per year.

It arose as a settlement at the Tikhonskaya station (opened in 1915), which in 1928 was transformed into a working settlement of Tikhon-Stantsia. In 1932, it was renamed Birobidzhan after the name of the Birobidzhan area: the so-called space between the rivers Bira (Evenk "river") and Bijan (Evenk bidzhen "permanent camp").

Founded: 1915Urban settlement since: 1928Town from: 1937City of regional subordinationCenter: Jewish Autonomous RegionDeviation from Moscow time, hours: 7Geographic Latitude: 48 ° 47 'Geographic Longitude: 132 ° 56 'Height above sea level, meters: 80Located on the Middle Amur Lowland, on the river. Bira (tributary of the Amur River), 172 km west of Khabarovsk. Node of. Roads and roads. Airport.
The climate is monsoon. The average temperature of January is -21 to -26.5, July +18 +21. Precipitation is 500-700 mm per year.It arose as a settlement at the Tikhonskaya station (opened in 1915), which in 1928 was transformed into a working settlement of Tikhon-Stantsia. In 1932, it was renamed Birobidzhan after the name of the Birobidzhan area: the so-called space between the rivers Bira (Evenk "river") and Bijan (Evenk bidzhen "permanent camp").