THE OPTIC FIBER WAS A MAJOR ___________ IN THE FIELD OF TELECOMMU...

Question

5.  The optic fiber was a major ___________ in the  field of telecommunications. A- breakdown  B- breakthrough  C- revolution   D- technique

Accepted Answer

PART A. LISTENING I/ Listen to the talk about men and apes, and then complete each sentence with NO MORE THAN THREE WORDS. (5pts) 1. body structure 2. tail 3. hands and feet 4. large...

THE OPTIC FIBER WAS A MAJOR ___________ IN THE FIELD OF TELECOMMU...

Bạn đang xem 5. - Đề thi học sinh giỏi môn Tiếng Anh lớp 9 cấp trường năm 2020-2021 có đáp án - Trường THCS Nga Thắng