第三部分阅读理解阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。By analyzing acad

第三部分阅读理解
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
By analyzing academic data from 10 states, representing the testing of more than 7.2 millions of youths, U.S. researchers found that gender differences in math scores were extremely small among all ethnic groups in grades 2-11.
These findings are in contrast to earlier results from 1990 that indicate measurable differences favoring males in complex problem-solving, beginning in the high school years.
Janet Hyde from University of Wisconsin and colleagues reported their study results in the journal Science on Friday.
Currently, women are largely absent from the highest levels of careers in mathematics, the physical sciences, and engineering. In the United States, Ph.D. programs in engineering currently average only about 15 percent women, and similar statistics have led to stereotypes (成见)about girls and women lacking in mathematical ability.
Now, it is clear that the general population no longer shows a gender difference in mathematical skills, according to this latest report.
And this new data on academic performance in the United States shows that students are tested frequently on "recall" and "skill/concept" items, but rarely on "strategic thinking"(战略思维) or "extended thinking" concepts.
If standardized tests do not assess (评估)the sorts of reasoning that are crucial to careers in science and math, then the skills may not be taught, putting American students at a disadvantage to students in other countries where testing and instruction focuses on more challenging content. "This is a gap that should be fixed," Hyde said.
56. What is the best title of the passage?
A. A new study result about math.                   B. No gender differences in math.
C. Girls are not good at math.                       D. Girls do better in math than boys.
57. The underlined word “crucial” in the last paragraph most probably means______.
A. necessary      B. unimportant         C. important    D . cruel
58. What Hyde said in the last paragraph means that ________.
A. standardized tests should assess the sorts of reasoning so that the skills may be taught
B. testing and instruction focuses on more challenging content in the USA
C. students in other countries are cleverer than American students
D. students should be tested frequently on "recall" and "skill/concept" items
59. The passage is most probably taken from _______.
A. a science magazine B. a research paper        C. a personal diary D. a newspaper