单项选择题

What does "these two killers" in the second paragraph refer to()

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.

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单项选择题

Simon Harper writes from the viewpoint of someone who()

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

单项选择题

The Interactional Red Cross is ()non-profit organization that cares for the wounded, sick and homeless in wartime, and () victims of natural disasters.

A. the; the
B. a; the
C. the; 不填
D. a;不填