"a / an + 单名+ and a half"常接单数谓语;“one and a half +复名”多接复数谓语.e.g.
①A year and a half has passed .一年半已过去了.
②One and a half tons of rice are sold .已卖了一吨半大米.
应该选B
"a / an + 单名+ and a half"常接单数谓语;“one and a half +复名”多接复数谓语.e.g.
①A year and a half has passed .一年半已过去了.
②One and a half tons of rice are sold .已卖了一吨半大米.
应该选B