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【简答题】
油松耐干旱瘠薄，不耐_________和__________，适宜在中性和微酸性的土壤上生长。在通气、排水不良的粘重土壤上生长缓慢，枝叶稀疏，早期干稍。
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Water Resource Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts (干旱) are causing famine and distress in some areas, and industrial and agr...
A.
build big lakes to store water
B.
construct big pumping stations
C.
build small and cheap irrigation systems
D.
channel water from nearby rivers to cropland