Ad-makers choose words and brand names very carefully in order to make a creative image of the product they are ____.  

A．processing

B．producing

C．providing

D．promoting

人类主要生殖器官的功能是（　　）

A．分泌消化液和激素

B．产生生殖细胞、分泌性激素

C．胎儿发育场所

D．分裂产生新细胞