考试新辅导之托福写作题库新增试题八1

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　　语法（Page 167）
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9 ^( z/ F2 p/ R$ q6 H* p# ^' d0 \* a  c  f　　1。The ponderosa pine is _____ of most of the timber used by forest product firms in the Black Hills of South Dakota。
3 U& P6 l7 i. g5 e　　（A）the source
: c1 _2 i7 ?/ Y& U2 R　　（B）as source
　　（C）the source which
　　（D）because the source
　　2。Computers that once took up entire rooms are now _____ to put on desktops and into wristwatches。
　　（A）small enough
- _: ]$ K( v0 _' i6 A) \1 L$ T　　（B）smaller than
& E' V! G  m1 w$ k6 [9 t# m　　（C）so small
　　（D）as small as
* K9 j) N, P+ W/ o+ p! {　　3。According to some educator，the goal of teaching is to help students learn what _____ to know to live a well－adjusted and successful life。
　　（A）do they need
0 O# O2 a) l/ M7 y* ]" `　　（B）they need
　　（C）they are needed
- ~1 u7 O$ y* _6 B) x% }1 q3 j　　（D）as they may need。
& |: }6 G- P$ T0 O! N" B　　4。The sapphire‘s transparency to ultraviolet and infrared radiation makes _____ in optical instruments。
' r) a5 w  L2 c* d, d6 R% {- @: y, |　　（A）it is of use
　　（B）it uses
　　（C）it a useful
　　（D）it useful
　　5。_____ initial recognition while still quite young。
　　（A）Most famous scientists achieved。
9 _  |8 R. Y1 X8 L3 b　　（B）That most famous scientists achieved
　　（C）Most famous scientists who achieved
2 q' y- C# B2 k: n- m9 z" E1 F& Z/ I9 j　　（D）For most famous scientists to achieve。
　　6。Mango trees，_____ densely covered with glossy leaves and bear small fragrant flowers，grow rapidly and can attain heights of up to 90feet。
　　（A）whose
　　（B）which are
# K6 B0 {# H5 a6 V　　（C）are when
- @0 ^) s# L& d' s( D- M8 M　　（D）which
　　7。_____，the Canadian composer Barbara Pentland wrote four symphonies，three concertos，and an opera，among other works。
/ J) p1 ^$ n1 O5 m　　（A）An artist who，prolific
' ^! ]# _  e. i- y$ P　　（B）Is a prolific artist
" e+ J% k  q" b1 ~6 b　　（C）Prolific an artist
5 q8 F: k* d6 z5 E* U9 h　　（D）A prolific artist