SAT真题类型：Mathematics > Standard Multiple Choice

　　Read the following SAT test question and then click on a button to select your answer.

　　The circle shown above has centerand a radius of length. If the area of the shaded region is, what is the value of?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2013年8月26日SAT考试官方每日一题答案：A

解析：In order to find the value of, you should first determine the measure of the angle that is located at pointin the right triangle. To determine this angle, you must calculate what fraction of the circle’s area is unshaded. The radiusof the circle isand its area is, or. The area of the shaded region is, so the area of the unshaded region must be. Therefore, the fraction of the circle’s area that is unshaded is, or. A circle contains a total ofdegrees of arc, which means thatofdegrees, ordegrees, is the measure of the angle at pointin the unshaded region. Since you now know that two of the three angles in the triangle measuredegrees anddegrees and that the sum of the measures of the three angles is alwaysdegrees, the third angle must measuredegrees. Therefore,.

SAT真题类型：Critical Reading > Sentence Completions

　　Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

　　Enrique did not take Marisol seriously when she told him she was going to bed to sleep for a week: he knew she was prone to -------.

　　(A) earnestness

　　(B) belligerence

　　(C) simile

　　(D) hyperbole

　　(E) understatement

　　Explanation

2013年8月27日SAT考试官方每日一题答案：D

解析：“Hyperbole” is extravagant exaggeration, often not intended to be taken literally. If Marisol is prone, or has a tendency or inclination, to greatly exaggerate things or make extravagantly exaggerated statements, Enrique would know not to take seriously her statement that she was going to sleep for a week.