The officers of an 1845 English ship belonged to the nobility, but they
* V3 X& W: E6 h7 fexperienced more severe lead poisoning on an extended voyage than
5 r+ y. t: Q" O# D' a6 a, c+ Bdid the working-class crew. It was discovered later that canned foods,
5 r; y4 g F( e# p- c; F. d0 _bought by the crew and officers to supplement the equally distributed
4 N% P# `8 Z. S, O/ Hdried food rations, were tainted with lead. 7 `( J/ U3 O$ w k) {# q! i7 m
Given the information above, which of the following, if true, would most : l1 S' z: B" m
contribute to an explanation of the greater severity of lead poisoning
5 i5 I+ v3 E6 n# {among the officers?
; b5 a6 } j2 k) F4 `( K$ O/ P A Although all ship members ate the same amount of food per day,, z# L* G( E3 p& Y7 p7 T8 ?
the crew ate all of their daily dried food rations while the officers# s, [" E1 d# J) ?: N2 i) w
substituted canned food for most of their rations.
# z: [3 v3 r& V1 E; A6 ^: k3 x1 J B The canned food produced in England in 1845 could last the dura-
4 N4 P+ x, F- z tion of most extended voyages without becoming inedible.
- l# x( Y, _* _* r3 [4 H" _ C On average, the officers had spent less time at sea than had the
: Y1 Z2 T. O! ]% `0 ` members of the working-class crew. # ]% e- Z9 h8 P K
D The population of England in 1845 got much of its drinking water% t- `; ~( [6 V4 n5 H, b
from lead pipes that carried the water from rivers and lakes,& c* e- Y! o Q7 ?1 W; B- d9 I n
thereby contaminating the water with lead particles. ! ]" ~, t2 u" }3 U( h- r& n
E The rate of consumption of canned foods did not increase as6 O) }/ E1 P: d; M5 ^
the ship's voyage continued.
$ y. Z6 o4 i! a8 c# L7 r答案A |