The word “it” refers to _________. A. dental floss B. bacteria C. removal of plaque D. plaque
The word “it” refers to _________.
A. dental floss
B. bacteria
C. removal of plaque
D. plaque
The word “it” refers to _________.
Đáp án C
Từ “it” dùng để chỉ_____.
A. chỉ nha khoa
B. vi khuẩn
C. loại bỏ mảng bám
D. mảng bám
Dẫn chứng: It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions.