以下的地理区域中，为我国主要农业区的是
①北方地区；②南方地区；③西北地区；④青藏地区。 [ ]
A．①②
B．②③
C．③④
D．①④
答案：A
在□里填上“＞”“＜”或“=”．
970毫升□1升3升□3000毫升．
---It is known to all that this factory pours lots of waste water into the Changjiang River every year.
---- _________ near my hometown.
A．So does it
B．So it is
C．So the one does
D．So does the one
