患者，男性，60岁，突然持续性胸痛5小时入院，查心电图确诊为广泛前壁心肌梗死，入院后出现三度房室传导阻滞，QRS波群宽大畸形，心率为40次/分。

该阻滞部位可能在（）.

A.房室结以上

B.阻滞部位在房室结

C.阻滞部位在左束支

D.阻滞部位在右束支

E.阻滞部位在希氏束

Which of the following statements can be inferred from the passage
a. An investor of trading stocks only cares about the fixed assets of companies.
b. A buyer of investing stocks is always concerned about the performance of companies.
c. Most people keep their investing stocks for a longer period of time.
d. All people buy trading stocks and investing stock at the same time.