Cold symptoms such as stuffy nose,runny nose and scratchy throat

Cold symptoms such as stuffy nose,runny nose and scratchy throat typically develop gradually, and adults and teens often do not get a fever.On the other hand,fever is one of the characteristic features of the flu or for all ages.
【正确答案】：普通感冒的症状，如鼻塞、流鼻涕和喉咙发痒，总是逐渐加重，而且成年人和青少年患者一般都不发烧。【解析】原句是并列复合句，采取直译法，按顺序翻译即可。such as引出的是symptoms的同位语，汉译时可作为插入语译出，不影响主句的行文。develop gradually意译为“逐渐加重”。