题目

 Canada is a country ______ many different nationalities as well as one with foreign immigrants ______ the majority of its population. A. making up of; occupied with             B. consisting of; making up C. made up of; consisting of          D. consisted of; taking up 答案：         B在下面一段文字横线处补写恰当的语句，使整段文字语意完整连贯，内容贴切，逻辑严密。每处不超过10个字。中国西部生长着大片胡杨。它 ① ，像是马戏团的小丑，拼命地博得观众的笑声。为此，它要付出许多。在阳光的舞台中央，它 ② ，它只能用浓密的树叶去遮挡着阳光，这是它唯一的盾牌，柔软，却坚硬。它 ③ ，便很快地穿越沙质的土壤，以坚忍的根系，向深处进发。