51. In the meantime, the question facing business is whether such research is _____ the costs.
! ?2 ?3 a2 m1 }2 v# L A. worth
2 k/ d3 Z5 G- x5 y B. worth of
% q/ m2 `# X( ?! @5 U C. worthy+ P- G8 R1 U* Z- S' a7 {- r& R) `$ a4 A
D. worthwhile
* G9 P& X& _4 X 52. In the preface _____ the book, the old scholar attaches great importance to practicalness.( ^4 F) a f9 O, W+ Q3 Y
A. to
: m% u. l: E# ~0 } B. for
& T- g( j4 {; V1 n. A* V8 g C. about4 R, M3 K% S; P5 k0 W) B1 K Z& Y
D. of, h% p. B4 R3 s9 R4 T* d
53. In this experiment, they are wakened several times during the night, and asked to report what they _____.
9 I/ ?6 ~! h, y; J0 t A. had just been dreaming# z; C' k, B4 t+ `+ E7 W: g
B. have just been dreaming0 C/ W* _+ _+ t4 b! f
C. are just dreaming
/ ]! x, r# o8 z7 P; q, d" Q- e D. had just dreamt
+ `4 U/ \6 T% t: V( j! x& i 54. In this factory the machines are not regulated ______ but are jointly controlled by a central computer system.
7 Q9 X7 y3 ?* }1 r' @; o7 B A. independently* q6 |9 Z: W0 j6 P0 W1 S7 q
B. individually. y. w6 `0 O7 ^ t& f
C. irrespectively
0 X4 l6 H) B) Q0 P D. irregularly
3 f- s& k8 \4 O 55. It _____ five years since the famous singer left her hometown.% q) \, L: ~* X3 L% ]4 }$ g8 f; ^- R
A. was a, f9 X+ L* b. g$ j1 |2 U
B. is" `6 L3 t" R* t0 n% Z: `
C. has passed
6 ]6 n; O; C' u8 i# e$ ` D. had been |
发表于 2012-8-14 11:54:21
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