大直径跑绳采用大接方法,外观虽好,但有不少实质上的断股,且浪费钢绳,应于拚弃。
参考答案:对
He is packing his suitcase ______ his _______. [ ]
A. in, books
B. on, toys
C. with, clothes
D. for, fruit
指南针是从( )朝开始用于航海的
A.唐
B.汉
C.明
D.宋