of the earth's surface covered with water. [ ] A. Two-third; is B. Two-third; ar
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![of the earth's surface covered with water. [ ] A. Two-third; is B. Two-third; ar](/pic/43_785242.jpg)
________ of the earth's surface ________ covered with water.
[]A.Two-third; is
B.Two-third; are
C.Two-thirds; is
D.Two-thirds; are
试题答案
答案:C