Compared to the late 1970s, the percent of children aged 12 to 17 who were overweight in 1994 （）
A: decreased
B: remained unchanged
C: increased
A: decreased
B: remained unchanged
C: increased
举一反三
- To judge a child's standard, his marks in a test must be compared with marks gained by ______ A: others of the same age B: the same child at different ages C: older aged children D: younger aged children
- The assembly line significantly _________the assembly time per vehicle and _______the profit margin. A: decreased; increased B: increased; decreased C: increased；increased D: decreased；decreased
- We can come to the conclusion that______. A: 60 percent of American children are now born illegitimately B: at least 50 percent of black children are now born illegitimately in America C: 60 percent of American children were born illegitimately in the 1960s D: at least 60 percent of American children were born illegitimately in the 1960s
- 4. If all the x values were increased by 5 in this table, then the answer to question 3 would be （ ） A: Unchanged B: increased by 5 C: multiplied by 5 D: indeterminate
- In the late 1970s, U.S. nominal interest rates were high and real interest rates were low, but in the late 1990s, U.S. nominal interest rates were low and real interest rates were high.