单项选择题

6/28,21/98,18/84,9/42，( )

A.25/60
B.12/44
C.12/56
D.25/78
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●Heterogeneous network environments consist of computer systems from (66) vendors that run (67) operating systems and communication protocols. An organization that (68) its computer resources is usually (69) the task of integrating its heterogeneous systems. Typically, each department or division has defined its own network needs (70) OS, LAN topology, communication protocols, applications, and other components.(66) A.sameB.similarC.differentD.difference(67) A.sameB.similarC.differentD.difference(68) A.consolidatesB.consistsC.considerateD.consoles(69) A.faced onB.faced withD.faced aboutD.faced up to(70) A.in generalB.in any termC.in set termsD.in terms of
A.(66)
B.same
C.similar
D.different
E.difference
(67)
F.same
G.similar
H.different
I.difference
(68)
J.consolidates
K.consists
L.considerate
M.consoles
(69)
N.faced
O.faced
P.faced
Q.faced
R.in
S.in
T.in
U.in
单项选择题
如果没有达尔文、马可尼等专家的新科技观的涌现，就不会产生世界上第一部科幻小说；如果没有广义相对论、量子力学的发展，就不会迎来科幻小说的黄金时代；如果没有原子物理、太空科学的发展，就不会有灾难科幻作品或超级空间探险小说。 这段话的主要意思是：( )。
A.科幻小说对科学的发展起了强大的推动作用
B.科幻小说的发展依赖于科技的进步
C.科幻小说被用来形象地描述最新科学发现
D.科幻文学与科学相互促进，共同发展
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