专升本考试

【单选题】The main factor in changing the amount of heat on the earth is ______.
A．man's agriculture and industry ways
B．natural weather
C．wind and rain
D．clouds
网考网参考答案：D
网考网解析：
参见句子：Scientists believe clouds may be an important factor(因素)in changing the amount of heat on the earth． document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>