B.the farmers irrigate the land together
C.all farmers use irrigation systems in northern Benin
D.the solarpowered systems take up more manpower
68.The underlined word “surplus” in the 4th paragraph most probably means________.
A.special
B.unnecessary
C.extra
D.abandoned
69.Using solar power to pump water has advantages EXCEPT that________.
A.solar energy has higher cost at first
B.solar power helps to protect environment
C.solar power helps farmers increase earnings
D.solar energy can be more economical in the long run
70.What can be the best title for the text?
A.Manpower affects rainfall in Africa
B.Irrigation by carrying water in buckets
C.Solarpowered pumps aid African farmers
D.Vegetable supply increased in African villages
D
BEIJING,March 1 (Reuters)—China hailed its best ever Winter Olympics
on Monday,crediting technology,foreign
coaches
and
even
improved language skills for the winning five gold,two silver and four bronze medals in Vancouver.
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