The Official SAT Question of the Day---SAT每日一题(已更新到July 27)

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July 8

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2 m+ S1 U+ Y. \3 U, w/ p. RAnswer :A
+ a- @( ]' ^9 GHere's Why:
An equilateral triangle has three equal sides, so the lengths of the three arcs must be equal, and thus each ars is 1/3 of the circumference of the circle. The circumference of the circle is 2πr, so the length of arc AXB is 1/e o 2πr. pr 2πr/3

Difficulty: Medium
Question Type: Standard Multiple Choice 9Mathematics)
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" O! c: Z3 F$ |( G: N, b% SJuly 9
Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.
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' m) ]& l: E# r% b& cSince the two legislators had a long history of major disagreements, the senator considered his colleague's enthusiastic assurances that they would be in agreement on a forthcoming piece of legislation ___.

1 D7 E# h4 Z7 AA. fatuous
/ J( F0 X( ~, z7 j: o. YB. precious
C. sagacious
2 j3 E# [6 e1 X7 K* L" ]! aD. meritorious
E. ignoble

Answer: A
Here's Why:
' M# I9 P1 k. f, e; yChoice (A) is correct. It makes sense that the senator, in light of his and his colleague's shared history of non-cooperation, would consider the colleague's assurances "fatuous", or complacently foolish.
& P6 ?' V3 a/ Y) @) A( WQuestion Type: Sentence Completions (Critical Reading)

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: [) p! z) z% j7 gJuly 10
( B6 }& I6 s$ O0 K7 HThe following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must changed to make the sentence correct. If the sentence contains no error, select choice E.

( h6 r7 P6 H; K' Z; zAlthough not the first animated feature film,Disney's Snow White and the Seven Dwarfs was the first animated film to use up-to-the-minute techniques
         A                      B                                                                                                                                         C         
as well as achieving widespread release. No error
          D                                                    E
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A. (A)
B. (B)
5 V: W$ y! m  a/ b0 t* `" z( \C. (C)
D. (D)
2 |, S) i$ e' T& t: WE. (E)

Answer: C
Here's Why:
The error in this sentence occurs at (D), where there is an inappropriate verb form. The infinitive "to achieve" is needed to parallel the infinitive "to use."
Question Type: Identifying sentence Errors (Writing)

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  ~( D* R% g. L  Y" ~& PJuly 11

4 S1 U# k* M, k5 f  ~3 gAnswer: D
Here's Why:
The second coordinated of a point on the graph corresponds to v. From the graph, you can see that for 0≤t≤5, the smallest value of v is 5 and the greatest value is 10, so 5≤v≤10.
Difficulty: Hard
Question Type: Standard Multiple Choice (Mathematics)

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July 12
7 S4 c2 G$ m2 @( t5 fChoose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.
The word, accustomed to ___ whenever governments change hands, expected rioting and bloodshed; but the transition of power was remarkably ___.
A. turmoil ... chaotic
/ H# n7 L: E" k3 sB. harmony ... orderly
( N- I3 D* ?+ q& S! l* [+ m9 HC. ceremony ... solemn
D. violence ... uneventful
E. splendor ... unpopular

$ F5 O3 }! L! ?; f7 PAnswer: D
Here's Why: The world was accustomed to "violence" and expected rioting and bloodshed, but this time the change of government was, on the contrary, "uneventful."
Difficulty: Medium
' p5 _) C3 u5 Y. q: q! M( Y1 x9 wQuestion Type: Sentence Completions (Critical Reading)

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July 13
: e7 ^. o/ U7 q  N9 _Part of the following wentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A.
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The first public botanical garden in the United States, the Elgin botanic Garden in New York City was established to provide plant materials forstudying by medical students.
A. for studying by medical students.
3 k/ m' Z# H  m# x9 E1 CB. for medical sutdents to study
C. to medical students for their study
) Y+ h2 ?. C9 ?" }9 A2 }D. for the study of medical students
E. that medical students will study

" P, `! r# Q7 \& L  ~9 ?, FAnswer: B
! d$ Q8 F6 |, PThere's Why:
% ?9 s7 A) X, V2 }( h6 n. F% `It avoids the error of the original by replacin gthe awkward and imprecise "for studying by medical students" with "for medical students to stdy."
2 X! A0 K; _* C; h( l/ x  TQuestion Type: Improving Sentences (Writing)

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July 14
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5 J1 c4 _8 j& TAnswer: B
0 ~! ]; B! P1 R' rHere's Why:
Division by 0 is not defined, so the equation is not defines when (x+3)(x-4)=0. The product (x+3)(x-4) is equal to 0 of x=-3 or if x=4. Therefore, y is defined for all of the choices except -3.
9 s$ e$ u& x( U& g# zDifficulty: Medium
Question Type: Standard Multiple choice (Mathematics)

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July 15
+ I5 f8 ?6 P; M6 X) R3 J% yChoose the word or set of words that, when inserted int he sentence, best fits the meaning of the sentence as a whole.
Bolstered b his unflagging determination and ___ physical preparation, Tom Whittaker became the first amputee to successsfully climb to the summit of Mount Everest.
A. fortuitous
B. assiduous
0 h' O0 ]1 H, e& nC. heedless
D. expeditious
E. pedantic

1 ?7 m9 T6 m+ Q6 C+ |Answer: B
Here's Why:
In climbing Mount Everest, Tom Whittaker was "bolstered," or supported, by the type of physical preparation required to reach the summit of Mount Everest. " Assiduous," of careful and persistent, preparation coupled with "unflagging determination" would help someone complete such a chanllenging task.
. Y5 }) [5 m) O& y% K" d: cDifficulty: Hard
, G8 C$ E, |* SQuestion Type: Sentence Completions ( Critical Reading)

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July 16

Answer: A
. P8 m# E; U1 l( o% b) i; IHere's Why:
- p2 }  Z2 O/ S8 B* ^5 _The error in this sentence occurs at (A), where awkward phrasing and an unnecessary pronoun create a comma splice. the entire phrase " It depends on" can be reduced to " Depending on."
Question Type: Identifying Sentence Errors (Writing)

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3 ?' x. W5 M" B1 @- V: P! bJuly 17

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Answer: E

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July 18
Choose the words or set of words that, when inserted in the sentence, est fits the meaning of the sentence as a whole.
Scientists have discovered that our sense of smell is surprisingly ___, capable of distinguishing thousands of chemical odors.
A. rigid
B. inert
C. erratic
* W3 G$ w9 b: aD. keen
E. innate

4 \& `4 H! i1 b6 R# t0 HAnswer: D
" g9 F! P$ p7 C! W+ |! I" pHere's Why: one of the meaning of "keen' is "acutely sensitive." Therefore, if our sense of smell is keen or acutely sensitive, it is capable of " distinguishing thousands of chemical odors."
- A( r2 K5 c: [1 r1 A0 H# nDifficulty: Easy
Question Type: Sentence Completions (Critical Reading)

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July 19
" W; D( d: C9 U$ w9 G# `Part of the following sentence is underliend; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A.

According to the study, personality traits may vary as much from one dog to another as from one person to another.
A. as
. w8 o! ?+ V1 w1 S' Ob. as it is
4 b: N$ R# t& q3 g( Y! J) eC. as when they are
D. than
- v" Q% B4 Q. j, _$ |  _' vE. than they do
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Answer: A
Here's Why:
It avoids the errors of the other options by using the idiomatic "as" to compete the phrase "as much ... as."
Question Type: Improving Sentences (Writing)

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July 20
  @* M8 d0 e  w- W# ~Read the following SAT test question, then click on a button to select your answer.
Which of the following numbers is divisible by 3 and 5, but not by 2?
A. 955
* j: s" _0 `$ C' EB. 975
/ B/ t+ p' U, i$ z1 Y  X* |! fC. 990
* z8 @, q+ t( @+ P4 }6 UD. 995
E. 999

Answer: B
Here's Why:
For a number to be divisible by 5, the number must end in 5 or 0; therefore, 999 is not the answer. For a number to be divisible by 2, the number must be even; therefore, 990 is not the answer since you do not want the answer to be divisible by 2. For a number to be divisible by 3, the digits of the number must add up to a number that is multiple of 3. For 955, 9+5+5=19,which is not a multiple of 3. For 995, 9+9+5=23, which is also not a multiple of 3. For 974,9+7+5=21; since 21 is a multiple of 3, it follows that 975 is divisible by 3. So 975 is the answer.
Difficulty: Easy
Question Type: Standard Multiple Choice (Mathematics)

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July 21
0 c+ p5 K/ I4 i$ H( ~  X2 w/ k& ~Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

True to her altruistic beliefs, Natalie ___ the ___ attitude of her colleague that a client represented nothing more than a source of income and an opportunity for advancing one's professional reputation.
A. applauded ... conscientious
B. condoned ... aggressive
C. lamented ... mercenary
D. adopted ... egotistical
E. belittled ... magnanimous

( D+ O5 X4 a% b1 e: P! uAnswer: C
Here's Why:
# H) l6 ]2 x0 c' ENatalie, an "altruistic' person, would lament the attitude of a greedy and ambitious colleague whom she would describe as "mercenary."
( q% z9 l4 R, ~Difficulty: Hard
Question Type: Sentence Completions (Critical Reading)

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2 f) \( v) ?. \- R3 X- BJuly 22
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- K1 ~1 m  o- T/ |' JAnswer: C
Here's Why:
& L" @, Z0 Q' K, ^9 K' nThe error in this sentence occurs at (C), where the use of "there" creates a comma splice.
) J$ m; M5 r* _7 `7 s) U' X" @+ ~Question Type: Identifying Sentence errors (Writing)