 ; b( G6 q1 X) Z) j3 R7 b8 H# q
In 1970, if 5 percent of the water use was for domestic purposes, approximately what was the daily average number of gallons of water used per capita for domestic purposes?
" T9 @) }; S6 F* q A.105
$ v7 E4 P( `0 A( o* D B.50
d0 @* k5 {! L. t' O7 f C.20/ f' c% R: N) W: U! u
D.10
5 J1 u" E$ W0 c( I E.5
5 m0 V1 ^/ w- H. h2 w5 Y 答案：A2 U) S, C( L& c4 g) @1 m* I
If in 1900 the water use in Country K was the same as that in Country X, but increased at the constant rate of 3 billion gallons every year, then the two countries would again have had the same water use in approximately what year?
; [1 v$ L. o" Y0 e- J! @ A.19100 R) N3 h: v7 \" U
B.19208 C- l2 d; \& N0 A! g2 @+ x
C.1930: X- f* r+ |4 d t0 A1 c; U
D.1940- ~- t" b7 h4 ^0 X7 ]* ~
E.1950
. f2 f: Y2 y+ S, F$ y7 M0 @ 答案：E |
发表于 2012-8-15 12:55:17
