大沟(major groove)和小沟(minor groove)

[主观题]What are your major subject and minor subjects?

[问答题] 什么是胃小区、胃小沟及结肠无名沟?

[名词解释] 胃小沟

[名词解释] 小调（Minor mode）

[名词解释] 次要元素(minor element)

[单选题]A． minor-party or independent candidate can draw votes away from the major-party nominees but ______almost no chance of defeating them.A． getsB． haveC． standsD． rises

[名词解释] 小舞蹈症(chorea minor)

[名词解释] 微效基因抗病性（minor gene resistance）

[问答题] 怎样利用小溪、小沟等微水源进行灌溉？

[名词解释] 大调（Major mode）