【单选题】Only that factory ____________ yesterday __________ this kind of machines.
B.
did visited; does it produce
C.
we visited; does it produce
【单选题】We all agree that the products of this factory are of better ________.
【单选题】巴比妥类药物与碱共沸,水解释放出氨气,是由于
【简答题】We will set up a factory in that country, which is rich in (nature) ______resources.
【单选题】This is the factory ________ we visited last Monday.
【单选题】This is the factory ____ we worked a year ago.
【单选题】鉴别巴比妥类药物的硝化反应,主要是利用该类药物结构中的
【单选题】The factory________ we visited yesterday was the one _______ I once worked.