下列()是属于理想农业土土壤质地
A.砂土类
B.壤土类
C.黏土类
D.紫色土类
参考答案:B
With ________ word “PM 2.5” repeatedly appearing in ________ media reports, the public can’t help wondering what it really means.
A.the; \
B.a; the
C.the; the
D.\; the
2007~2007年,甲国平均每年比乙国少排放的碳总量为()
A.30亿吨
B.48亿吨
C.55亿吨
D.60亿吨