【C9】A．classesB．groupsC．gradesD．terms

【C15】A．honorB．favorC．placeD．terms

【C5】A．wordsB．expressionsC．phrasesD．terms

【C2】A．individualsB．groupsC．pairsD．persons

From the beginning of the passage we learn thatA．the school had only three classesB．the sc

Short－term sufficiency lulled them into ________ about the long－term threat.A constan

番泻苷A中两个蒽酮母核的连接位置是（)A.C1—C1B.C2—C2C.C9—C9D.C10—C10E.C9—C10