[单项选择]It is not until recently ______ there are many different kinds of hearing defects.


A. have the scientists discovered
B. the scientists have discovered
C. that the scientists have discovered
D. that will the scientist have discovered

[单项选择]It is not until recently ______ there are many different kinds of hearing defects.


A. have the scientists discovered
B. the scientists have discovered
C. that the scientists have discovered
D. that will the scientist have discovered

[单项选择]Not until many years later（）
A. the whole truth became known
B. did the whole truth become known
C. the whole truth has become known
D. has the truth become known

[单项选择]Not until many years later ______ known.
A. was the whole truth become
B. did the whole truth become
C. the whole truth became
D. the whole truth had became

[单项选择]The passage says that until recently scientists disagreed with the idea ______.


A. that there are mysterious forces in the universe
B. that man cannot discover what forces "really" are
C. that there are serf - evident principles
D. that we can discover why things behave as they do

[单项选择]Many visitors find the tempo of life here very difficult.（　）
A. kind
B. growth
C. speed
D. spectacle

[单项选择]Until recently, body heat has caused problems because it （）
A. was difficult to collect
B. came in a variety of forms
C. was difficult to get rid of
D. tended to be absorbed by physical objects

[单项选择]

Text 1
Until recently, the main villains of the piece had seemed to be the teachers’ unions, who have opposed any sort of reform or accountability. Now they face competition from an unexpectedly destructive force: the court. Fifty years ago, it was the judges who forced the schools to desegregate through Brown v. Board of Education (1954). Now the courts have moved from broad principles to micromanagement, telling schools how much money to spend and where—right down to the correct computer or textbook,
Twenty-four states are currently stuck in various court cases to do with financing school systems, and another 21 have only recently settled various suits. Most will start again soon. Only five states have avoided litigation entirely.
Nothing exemplifies the power of the courts better than an Il-year-old case that is due to be settled (sort of) in New York City, the home of America’s biggest school system with 1. lm students and a bu
A. more money for schools will damage the further advancement
B. better schools will not necessarily result from more money
C. the relationship between input and output is widely ignored
D. politicians argue against more money for the schools

[单项选择]

Text 4
Until recently, the common factor in all the science used to figure out if a piece of art was forged was that it was concerned with the medium of the artwork, rather than the art itself. Matters of style and form were left to art historians, who could make erudite, but qualitative, judgments about whether a painting was really good enough to be, say, a Leonardo. But this is changing. A paper in this week’s Proceedings of the National Academy of Sciences by Hany Farid and his colleagues at Dartmouth College in New Hampshire uses statistical techniques to examine art itself—the message, not the medium.
Dr. Farid employed a technique called wavelet analysis to examine 13 drawings that had at one time or another been attributed to Pieter Bruegel the Elder, a 16th-century Flemish painter. He also looked at Perugino’s "Madonna with Child", a 15th-century Italian masterpiece lodged in the college’s Hood Museum of Art. He co
A. what the artwork intends to tell
B. the style and form of the work
C. the common factor of science
D. the quality of the artwork