1 . “There was no colour ________ between us,” said Brand, who later worked as a guide showing tourists around Robben Island. Like me, Mendela came from a farm. We understood that we shared the same sky and the same air. “Two men got on well and became quite close, although this wasn’t allowed by the prison ________.”(根据句意填空)

2 . Often, our way of thinking is ________ on stereotypes-ideas about what someone or something is like. (根据句意填空)

3 . In the constant effort to improve our product, we________ the right to make construction or design changes without notice.

A．reserve

B．respect

C．balance

D．gain

4 . When antibiotics enter the body, they attack bacteria, either destroying them or making them unable to ________ .

A．combine

B．multiply

C．settle

D．behave