[单项选择]Psychologists have done extensive studies on how well patients ______ with doctors’ orders.
A. comply
B. correspond
C. interfere
D. interact

[单项选择]Several recent studies have gained wide attention for reconfirming the tragic disconnection of millions of black youths from the American mainstream. Harry Holzer, an economist at Georgetown University and a co-author of one of the recent studies, feels joblessness is due to largely weak schooling, a lack of reading and math skills at a time when such skills are increasingly required even for blue-collar jobs. Unable to find jobs, he claims, black males turn to illegal activities, especially the drug trade and chronic drug use, and often end up in prison.
As usual, it fails to answer the important questions. Why are young black men doing so poorly in school that they lack basic literacy and math skills Scholars must have known that countless studies by educational experts have found that poor schools, per se(本质上), do not explain why after 10 years of education a young man remains illiterate.
Nor have studies explained why, if .someone cannot get a job, he turns to crime
A. It enables black youths to get into employment.
B. It provides black youths with reading and math skills.
C. It prevents black youths from illegal activities.
D. It decreases drug trade and drug use among black youth.

[填空题]Studies have shown that students who take several tests learn more than _________________________________(看完资料只参加一次测试的学生).

[单项选择]

Recent studies have identified four major global environmental risks; acid rain, ozone depletion, deforestation and the greenhouse effect（）

A. recognized
B. proved
C. got rid of
D. multiplied

[单项选择]

Paragraph 1 Several recent studies have found that being randomly (随机地) assigned to a roommate of another race can lead to increased tolerance but also to a greater likelihood (可能性) of conflict.
Paragraph 2 Recent reports found that lodging with a student of a different race may decrease prejudice and compel students to engage in more ethnically diverse friendships.
Paragraph 3 An Ohio State University study also found that black students living with a white roommate saw higher academic success throughout their college careers. Researchers believe this may be caused by social pressure.
Paragraph 4 In a New York Times article, Sam Boakye—the only black student on his freshman year floor—said that "if you’re surrounded by whites, you have something to prove."
Paragraph 5 Researchers also observed problems resulting from pairing interracial students in residences.
Paragraph 6 According to
A. White students tend to look down upon their black peers.
B. Black students can compete with their white peers academically.
C. Black students feel somewhat embarrassed among white peers during the freshman year.
D. Being surrounded by white peers motivates a black student to work harder to succeed.