إعادة صياغة الكلام بطريقة مختلفة

🧠 The Common Cold — A Mysterious Illness
(1)
"Less is known about the cause of the common cold than about the causes of many more serious diseases."

📝 Questions
39. Which of the following statements is the most accurate?
A. The causes of less serious diseases than the common cold are better known.
B. We know less than we should about the causes of the cold and more serious diseases.
C. The cause of the common cold is better known than the causes of more serious diseases.
✅ D. We know less about the cause of the common cold than we do about the causes of more serious diseases.