第22题: [单项选择]Mars is not, it seems, the dry old planet we once believed it to be. Astronauts who are (1) to go there in the next decade may find plenty (2) water to slake(消除) their thirst.A. water B. ice C. food D. vegetable 参考答案:A 答案解析:名词辨析。由80题解析可知,此处应该选water。ice不与fresh搭配,且与文意不符。C和D在文中没有相关信息支持。