土壤热容量是指单位质量或容积的土壤每升高1℃所需要热量,热容量大的土壤()。
A、升温慢降温慢
B、升温慢降温快
C、升温快降温慢
D、升温快降温快
参考答案:A
北温带地区正值盛夏时,地球在公转轨道上的位置接近下图中的
A.①
B.②
C.③
D.④
President Obama and his team of administration promised to try every means possible to _____
3,500,000 jobs and _____ the goal of recovering its economy as soon as possible. [ ]
A. create; accomplish
B. invent; achieve
C. discover; win
D. attract; finish