单选题 What may be the result if we can not hear ourselves think?

A、 We may forget what we have thought about.
B、 Our thoughts may be interfered.
C、 Our mind may be harmed.
D、 We have difficulty using the right words.

【正确答案】 C

【答案解析】[解析] 细节题。根据文中第三段第三句If we don't we may have headaches，other aches and pains，or even worse mental problems．得知：医生认为我们有时必须听到自己的思维，否则就会头疼，其他的疼痛，甚至脑子会出毛病。故可以推断本题答案为[C]。