

Mọi người cho mình hỏi tại sao câu này lại chọn đáp án B với???
Các bạn giải thích chi tiết dễ hiểu giúp mình nha
Thank you!!!
Câu 7: Glass that has been tempered may be up to, ------.
A. as hard as ordinary glass five times
B. five times as hard as ordinary glass
C. hard as ordinary glass five times
D. ordinary glass as hard as five times
Các bạn giải thích chi tiết dễ hiểu giúp mình nha
Câu 7: Glass that has been tempered may be up to, ------.
A. as hard as ordinary glass five times
B. five times as hard as ordinary glass
C. hard as ordinary glass five times
D. ordinary glass as hard as five times