【答案解析】[解析] 19-21 The United States has more than 3,000 colleges and universities.Most require high school students to take an admissions test,either the SAT or the ACT.But some have reconsidered. The activist organization FairTest opposes the requirements.It lists more than 700 individual schools now where testing is optional.Students can provide their results,but only if they want to. A number of the schools are related as campuses within university systems.Yet in some cases,it appears that other campuses do still require testing. Testing critics say one reason to drop the requirement is that preparing for the tests takes away too much time from schoolwork,and life.They say the requirement places too much importance on one test and causes too much stress for students. Still,critics question just how much the tests really show about a student.They say higher scores in some cases might only show that a student's family had the money for costly test-preparation classes. One of the first colleges to drop the requirement was Bates College in Maine in 1984.Over the next 20 years,it compared students who provided their test scores and those who did not.The study found that grades and graduation rates were the same.
19.What would the students in the listed 700 schools probably do?