Before he was 20, he developed ______ for the personal computer.
A. the world first computer's language
A. the world first computer's language
C. the world's first computer language
D. the first world's computer language
Giải bởi Vietjack
Đáp án C
Loại A vì sai vị trí của từ sở hữu. Loại B và D vì không dùng "first world", chúng ta chỉ có duy nhất 1 thế giới nên không có the 1,2,.. world. Số thứ tự được ưu tiên đặt lên trước trong cụm danh từ.=> đáp án C (ngôn ngữ máy tính đầu tiên của thế giới)
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