单选题 The ocean ______ 70 percent of the Earth's surface, but contains about 20 percent of the Earth's total estimated species.
  • A. takes up
  • B. fixes up
  • C. stirs up
  • D. patches up
【正确答案】 A
【答案解析】[解析] take up：着手，开始做，占据(时间或空间)；fix up：修理，治疗，摆放；stir up：激起，煽动；patch up：结束，消除(分歧)