人们的身体里很难分解这些物质，因此有害的胆固醇就会增加，从而导致心脏疾病。

人们的身体里很难分解这些物质，因此有害的胆固醇就会增加，从而导致心脏疾病。

A.THESE ARE DIFFICULT FOR THE BODY TO BREAK OUT, SO LEVELS OF HARMFUL CHOLESTEROL IN THE BODY CAN RISE, POTENTIALLY LEADING TO HEART DISEASE.

B.THESE ARE DIFFICULT FOR THE BODY TO BREAK IN, SO LEVELS OF HARMFUL CHOLESTEROL IN THE BODY CAN RISE, POTENTIALLY LEADING TO HEART DISEASE.

C.THESE ARE DIFFICULT FOR THE BODY TO BREAK UP, SO LEVELS OF HARMFUL CHOLESTEROL IN THE BODY CAN RISE, POTENTIALLY LEADING TO HEART DISEASE.

D.THESE ARE DIFFICULT FOR THE BODY TO BREAK DOWN, SO LEVELS OF HARMFUL CHOLESTEROL IN THE BODY CAN RISE, POTENTIALLY LEADING TO HEART DISEASE.

正确答案是D