下列有关基因的叙述，错误的一项是[ ]

A．是遗传物质中决定生物性状的小单位

B．在生物的体细胞中成对存在

C．生物的某些性状，是由一对基因控制的

D．基因控制的相对性状在一个个体中能全部表现出来

-Why would some workers in Foxconn die ________ continue working in the factory?

-Psychologists say they are under too much pressure.[ ]

A. better than

B. by accident

C. instead of

D. rather than