填空题professionalism

单项选择题According to the passage, which of the following should be encouraged to enhance learning of math and science 1. Problem solving. 2. Actual research. 3. Repetitive in-class drills. 4. Group work. 5. Rote learning.

填空题wealthy

单项选择题______ was not one of the greatest 20th century American playwrights.

单项选择题All of the following words except ______ are formed through a process of derivation.