英语专业八级改错练习题及答案解析(八十七)

会计考友

　　Since 1965, when is equipment became operational, a
  S4 i% D! |1 a. ]. K5 ]% U) y0 [　　device called Eros has been helped to make sky traffic__1__
　　safe. Eros is short for Eliminate Range Zero System?
　　range zero meaning collision. Basically Eros is a computer
: Y- U* k/ S- U. {) a% t　　system measures, with great speed and precision, closing__2__
0 k/ D, N) o8 X7 ~7 r9 \+ d　　speed ( the speed at which two objects are approaching
　　each other ) and range ( the distance apart of the objects ).
　　Eros can warn aircraft approachable each other at jet__3__
　　speeds and can provide protection for as many as a thousand
　　aircraft in wide area. The pilot of an Eros?equipped aircraft
# n$ K% j  U$ U. a# a" `* c( \9 A　　heading for a collision hear a warning noise in his ear?phones__4_
9 C! j% v, f+ M　　when his airborne computer calculates that he is within thirty
$ B, }& x. [: `* U- R( M: C  j　　seconds or half a mile ( whichever occurs first ) of other aircraft.__5__
　　At the same time, a flashing red arrow on the device's indicator
7 }( s  c; n# Z　　panel instructs him to climb. Simultaneously, in the other aircraft, __6__
( F) P; _$ T1 [$ [, z7 G- r　　the signal is automatically reversed: the flashing arrow tells the
　　pilot to climb. The newer Eros II system can accommodate a total
　　of two thousands aircraft at one time within a 140?mile radius__7__
$ ^* K" B/ G1 v$ e) y　　Every three seconds, each Eros?equipped plane automatically
% e8 i' X0 X" n, l- X+ l/ @　　reports to ground stations and to similarly equipped aircraft
　　their precise range, altitude and approach rate. The producers__8__
　　of Eros, the McDonnell Dougals Corporation in the U.S., are
, A' S- w8 ^' W7 X4 y$ o' O/ A　　now studying the fitting of Eros and will do more to make__9__
8 y% w6 h5 m# C0 D9 l3 ]　　the sky safer: they shall also lighten the work of air?traffic__10__
　　controllers and increase the efficiency of airports.

会计考友

　　答案：
　　1. helped—helping
' C% r/ @' w7 V/ u( @* d- `& u　　现在完成进行时
% L0 P3 k1 t" b: `  S6 h4 Q　　2. measures前加that/which
　　that/which引导定语从句，修饰先行词a computer system
: Z* M( g8 g: l! G: }' c　　3. approachable—approaching
　　approaching为现在分词，修饰aircraft，相当于that/which
　　are approaching each other
　　4.hear—hears
5 |$ m- _/ D6 j0 R% D0 c) H　　其主语是the polit
　　5. other—another
; `+ I, M% Q) Q9 f6 f: b　　相对于上提到的an Eros?equipped aircraft， 此处为另一架飞机
$ K' s7 H* e5 g% T, u& v& F　　6. climb—descend
　　根据上下文的意义，一架飞机下降，另一架飞机上升，以免相撞
　　7.thousands—thousand
　　根据语法规则，数词hundred 、thousand 、million等词一般为单数形式
　　8. their—its
9 q7 H4 m+ t* G+ }　　指上文中的主语each equipped plane
, _; g, r- [" O( Z1 L% t, A　　9. 去掉make前的to
　　do与make并列作动词谓语
" h3 |- F( \4 g) n: q+ w& S5 U. r+ E　　10. shall—will
　　表示一般将来，shall常用于第一人称，will则常用于第二和第三人称