1. 到本学期末,他们将学完30门课程
; n% {; R/ R( K7 m K: bThey will have finished 30 courses in this semester last stage.
( @+ {) l; f. S& ~4 Q; L' g; t$ c* w' {5 s2.在20世纪四十年代,IBM设计出了第一代电子计算机* a; a2 G: C" c+ J6 m
In the 20 century 40s,IBM had worked out the first generation computer.
- G) L1 Q" a s0 _8 J7 J1 Z0 Y3.我们之前做过那个实验
5 H1 p, S4 \8 R2 r2 e* dwe had did that experiment.3 |- N) m2 ^' ?+ O% j( o1 B, m, X
4.早在十九世纪二十年代,人们就认识到这一现象非常有用
$ @9 M( b8 f" m% G4 Y! DAs early as the nineteen century 20s,people had realized that this phenomenon is very useful.4 d4 X" I5 B* _# E' G
5.如今,计算机在各个领域广泛应用
+ [% y z0 h. ]+ T# n$ TNowadays, computer was wide use in every field.
5 i* G8 n1 F" S; v" O" `; t6. Experience more than sufficiently teaches that men govern nothing with more difficulty than their tongues.- o6 o9 }: M5 x; p4 |# e" f B: d( P0 o
经验告诉我们沉默是金
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