公共英语考试

【单选题】Professor Carl Sagan believes that Venus might house the people from the earth as long as ________.


A．we fire the rockets containing algae into the atmosphere of Venus
B．we change Venus temperature
C．we make it possible to rain on Venus
D．we change the atmosphere on Venus

网考网参考答案：D
网考网解析：
[解析]要答好该题应该通读全文。要想使金星适合人居住有两个必要的条件：一是改变其较高的温度，二是使其降雨。这样我们可以看出B、C都是不完整的。A选项比较容易排除。 查看试题解析出处>>