[单项选择]Last year Luis invested x dollars for one year, half at 8 percent simple annual interest and the other half at 12 percent simple annual interest. Now he wants to reinvest the x dollars for one year in the same two types of investments, but the lower rate has decreased, If the higher rate is unchanged, what fraction of the x dollars must be reinvest at the 12 percent rate s that the total interest earned from the x dollars will be the same for both years ？（）
(1)The lower rate is now 6 percent.
(2)The total amount of interest earned from the two investments last year was $3,000.
A. 条件(1)充分，但条件(2)不充分．
B. 条件(2)充分，但条件(1)不充分．
C. 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D. 条件(1)充分，条件(2)也充分．
E. 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

[单项选择]Last year Luis invested x dollars for one year, half at 8 percent simple annual interest and the other half at 12 percent simple annual interest. Now he wants to reinvest the x dollars for one year in the same two types of investments, but the lower rate has decreased, If the higher rate is unchanged, what fraction of the x dollars must be reinvest at the 12 percent rate s that the total interest earned from the x dollars will be the same for both years ？（）
(1)The lower rate is now 6 percent.
(2)The total amount of interest earned from the two investments last year was $3,000.

A. 条件（1）充分，但条件（2）不充分.
B. 条件（2）充分，但条件（1）不充分.
C. 条件（1）和（2）单独都不充分，但条件（1）和条件（2）联合起来充分.
D. 条件（1）充分，条件（2）也充分.
E. 条件（1）和条件（2）单独都不充分，条件（1）和条件（2）联合起来也不充分.

[单项选择]

Last year, one group of students in Taiwan did just that. They took chances-and ended up in jail. More than 20 students paid a cram school owner to help them cheat on Taiwan’s entrance exam, according to police. The students received answers to test questions through cell phones and other electronic devices. Taiwan isn’t the only place in Asia to see major cheating scandals. In both India and South Korea, college entrance exams have been stolen and sold to students.
Academic cheating has risen dramatically over the last decade. Duke University conducted a survey of 50,000 university and 18,000 high school students in America. More than 70 percent of the students admitted cheating. Just 10 years earlier, only 56 percent said they had cheated. This trend extends far beyond the U. S., too. In Asia, where students face intense pressure to excel, the cheating problem is especially pronounced. In many Asian countries, a student’s performance is measured mostly
A. criticize the cram school for their poor education qualities
B. highlight the seriousness of cheating in Taiwan
C. show how prevalent the problem of cheating is
D. show sympathy for those who cheated

[单项选择]Last year, how many flights traveled through O’ Hare according to the Federal Aviation Administration
A. 930,000.
B. 970,000.
C. 913,000.
D. 914,000.

[填空题]Last year’s economy in the United States should have won the Oscar(奥斯卡奖) for best picture. Growth in gross domestic product was 4.1 percent; profits soared up; exports flourished; and inflation (通贷膨胀) stayed around 3 percent for the third year. So why did so many Americans give the picture only a B rating The answer is jobs. The macroeconomic (宏观经济的) situation was good, but the microeconomie (微观经济的) numbers were not. Yes, 3 million new jobs were there, but not enough of them were permanent, good jobs paying enough to support a family.
Job insecurity was not good. Even as they announced higher sales and profits, corporations acted as if they were in a loss, cutting 516,069 jobs in 1994 alone, almost as many as in the bad year of 1991.
Yes, unemployment went down. But over 1 million workers were so discouraged they left the labor force. More than 6 million who wanted full time work were only partially employed; and another large group was either sheltered behind self emplo