Analyzing the structure是什么意思?

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

Simply by analyzing a drop of blood, a doctor will be able to diagnose a birth defect or even cancer when it is in the early stage; using new technology, a material lighter but much stronger than steel can be produced.
These may sound like dreams at present. But the dreams may soon come true as research findings in laboratories are being turned into products more rapidly in the new century, according to experts participating in the fourth Asia-Pacific Economic Cooperation (APEC) Technomart, a technology exhibition and trade fair in Suzhou.　　
"Most people think nano-technology（纳米技术）is too far-fetched to be real. But in fact nano-technology has been applied in a wide range of fields, such as medicine. It is coming into our daily life," said Cheng Jiachong from a Hong Kong-based nano-technology firm.
Nano-technology based on the nanometer, the unit of which is a billionth of a meter, enables scientists to have new concepts of disease diagnosis and treatment on a molecular（分子）and atomic scale, Cheng said.　　
By using nanometer particles, a doctor can separate the fetus cells（胚胎细胞）from the blood of a pregnant woman to see if the development of the fetus is normal. This method is also being used in the early diagnosis of cancer and heart disease, he said.　　
One of the most significant impacts of nano-technology is at the bio-inorganic materials interface, according to Greg Tegart, executive advisor of the APEC Center for Technology Foresight.　　
"By combining enzymes（酶）and silicon chips we can produce biosensors. These could be implanted in humans or animals to monitor health and to deliver corrective doses（剂量）of drugs," he told the participants a technology forum during the exhibition.　　
"Nano-technology could affect the production of nearly every man-made object, from automobiles, tires and computer circuits（电路）, to advanced medicines and tissue replacement, and lead to the invention of objects yet to be imagined," said David Minns, a special advisor to the National Research Council of Canada.　　
It has been shown that carbon nano-tubes are ten times as strong as steel, with one sixth of the weight, and nano-scale systems have the potential to make supersonic transport cost- effective and to increase computer efficiency by millions of times, he said.
The experts agreed that the APEC technology exhibition and trade fair provided many chances for exchanges of innovative ideas and products.
小题1:Realization of the dreams mentioned in the first paragraph will mainly base on ________.

A．APEC	B．Chinese scientist
C．the APEC Center for Technology Foresight	D．Nano-technology

小题2:The length of a nanometer equals to ______.

A． meter

B． meter

C． meter

D． meter

小题3:We can imply from what David Minns said that _________.

A．Nano-technology could only be used to invent new objects.

B．Nano-technology could be widely used to produce or invent objects.

C．Nano-technology is a money-consuming technology.

D．Nano-technology can not be used to improve the service of Internet.

小题4: Compared to steel, carbon nano-tubes are ________.

A．stronger and lighter	B．lighter but as strong
C．stronger but as light	D．poor in quality