Tham khảo tài liệu 'tiếng anh bằng a –l084', ngoại ngữ, chứng chỉ a, b, c phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Tiếng anh bằng A -L084 1 Proteins are made up of long folded irregularly chains the links of which are amino acids. a A b B c C d D 2 . Although most species of small birds gather in groups at feeders provided by bird-watchers the bright red cardinals usually appears alone or with its mate. a A b B c C d D 3 The astronomy is the oldest science but it continues to be at the forefront of scientific thought. a A b B c C d D 4 Henry David Thoreau was an American writer whojs remembered for his faith in the religious significance of the nature. a A b
