单项选择题
A.pollution B.position C.question D.invention
A. Gene technology and another treatment of the two diseases. B. The two murderers who killed the cloned baby. C. The two diseases of cancer and heart disease. D. Hereditary diseases and cancer.
A. insists grades should become optional in the near future B. believe in the advantages of assessment based on grades C. is concerned about improving students’ creativity D. supports using students’ interests to measure their abilities