.江苏省无锡中学2015届高三4月调查考试英语试题第一节：单项填空 (共15小题；每小题1分，满分15分)21. Not having given birth to _son, Catherine decided to have _third child. A. a; a B. the; the C. a; the D. the; a22. Frozen wastes, vast mountain ranges, huge open fields ,countless rivers and endless forests _the fantastic natural _of Canada.A. consist of; sightsB. make up; sceneryC. are made up of; sceneryD. are consisted of; view23. The CN Tower, _the
