The first submarine in the British navy was the Holland 1. It was ______ （下水）in 1901.

中国大学MOOC: Some botanists are interested in the study of submarine plant life.

Such submarine landforms as continental shelf, continental slope and ___________ are developed on the seafloor of the East China Sea.

It was like being in a submarine passing through _______ fish. A: a group of B: a school of C: a crowd of D: a pack of

I don't know why they don't [u]      [/u] these movies. A: subtitle B: submarine C: casual

Although students may be in a （）position, teachers shall treat them as equals. A: subsidiary B: submarine C: subordinate D: subsequent

Dock is to boat as () A: sea is to submarine B: hangar is to airplane C: trailer is to truck D: lot is to parking E: car is to garage

What are the main parts of submarine remote control vehicle?( ) A: Self propulsion B: Buoyancy control C: Ballast D: Pipeline

You don't have to show（）to me. You can have your own ideas. A: attachment B: aggression C: submarine D: submissio

ad.刚才；只是；正好 A: submarine / ‘sΛbməri:n/ B: just / dʒΛst/ C: lonely / ‘ləunli/ D: afford / ə’fɔr:d/