</p> 练习:
1 g9 H# t" u, {& n: z 1. Backpacks are convenient because' W1 G' s9 {5 }/ S) Y) B! k
A they can be verylarge.
9 {. {, z0 _1 J B they can hold as many things as you want to carry.
1 h, }6 X0 y% [& k$ j C your handsare freed to do other things.
1 [+ l1 C, ~; e# M/ n* ]4 X D you do not have to carry things withyou.
y' \, a2 z' @ 2. What is the most important feature of the backpack invented byLawrence C.Rome
8 P- ?4 ^. z( y/ Q0 H/ w9 f! j$ r and his colleagues?
' G- J' A% E B0 W& ^ A It produces electricity forelectronic devices while the wearer walks.
6 f. n8 ?8 e5 ~+ ~8 d* y B It can be used as cellphones,GPS in the military actions or field studies.( v% u/ x% r6 t5 G
C It is small andconvenient.
& R( E; R( V u s D It is light and easy to carry.3 @2 k" _# `+ }$ \. u
3. The word "springs" inParagraph 3 means
d3 ?- _" T% Q( \+ Q A a small stream of water flowing naturally from theearth.
+ [6 b; D' m& c k$ G5 V, Y B the season of the year,occurring between winter and summer.
C/ s! G& J/ T2 @! m, I C the act or an instance of jumping or leaping.
i" \- ^: ?5 m' c: P9 B: R D a length of metal woundaround,which returns to its original shape after' m5 a4 Y$ S; S1 b. ^
being pushed.
! j; p- b2 S# J( B 4. According to Paragraph 4,what does Rome plan to do?7 U A& F3 u; V1 y- r$ u
A To make the backpackmore comfortable for the wearer.2 x& Y1 w; H2 P5 J: ?
B To put the backpack on the market.1 w8 c+ H! @ i
C To test the advantage of the backpack.
! \# S/ V8 y: | F) e D To promote the backpack in anewspaper or on television.$ ~1 D {- V: l h6 ^8 n' P Z; E
5. What is implied in “if you do get oneeventually,just make sure to took both$ ^6 N; D- {( O* f' E$ \8 B3 p
ways before crossing the street!”?! l9 E" @- x2 |
A You will be too excited to watch the traffic.& |. N, Z5 E. ?5 n* D- |4 k
B Enjoyingelectronic devices while walking may invite traffic accidents.
$ q8 S3 A- k' j) K4 ~ C It is notpossible for you to get such a backpack.' b3 C: i6 [2 t( @% m
8 D6 k& r) R: f a- Z% p
D It is wise of you to have such abackpack. |