A:Go with the man.
B:Go to the hospital.
C:Ask the policeman for help.
①a为mRNA,b、c、d、e为多肽
②最终合成的b、c、d、e在结构上各不相同
③合成a的场所在细胞质,f代表核糖体
④该过程表明生物体内少量的mRNA可以迅速合成出大量的蛋白质
A/An _________ is someone who draws or paints pictures or creates sculptures as a job or a hobby.
用正确的化学符号填空: