母畜妊娠期内增重，在前期主要以母体自身养分的贮积为主，而后期则以胎儿及附属物的增重为主。（）
参考答案：对
A．A trade Show of the latest sporting goods is on display.
B．An event for team sports is held with the country’s best athletes.
C．A spring market fair for cutting equipment and accessories is opera
D．A business rendezvous is scheduled between VIPs and the best athletes.
制定法
