51. When carbon is added to iron in proper ______the result is steel.
6 Z/ V8 }, u2 C- @& Q" @! b/ nA) rates B) thicknesses C) proportions D) densities - t9 j: m4 i- t
52. You should try to ______ your ambition and be more realistic.
. r: q$ Q- i0 s) M5 r) SA) reserve B) restrain C) retain D) replace4 C) p: k/ N1 ]5 o, T6 C
53. Nancy is only a sort of ______ of her husband's opinion and has no ideas of her own.
2 A# J4 M& O ], ^A) sample B) reproduction C) shadow D) echo; S8 J& c _, O5 V
54. Now that spring is here, you can ______ these fur coats till you need them again next winter.
( i9 n! D) R& PA) put over B) put away C) put off D) put down1 w% ^* F6 B8 l: W/ Q6 \
55. There is a _____ of impatience in the tone of his voice.
" @4 k; u# n1 _: vA) hint B) notion C) dot D) phrase1 z- M& w" H, Y5 s' g
51.C) proportions 52.B) restrain 53.D) echo 54.B) put away 55.A) hint |