单项选择题

Which of the followings is the main idea of the passage

A．Dr. Jeol Hiderbrand's discoveries and inventions.
B．Dr. Jeol Hiderbrand's contributions to education.
C．Dr. Jeol Hiderbrand's contributions to the world.
D．Dr. Jeol Hiderbrand, a versatile with ageless energy and vigor.

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单项选择题

What distinguished Dr. Jeol Hiderbrand from others as early as in high school

A．He was given the key to the chemistry lab.
B．His discovery of the correct formula for some chemical compound.
C．He learned more chemistry from his teacher.
D．His excellent score in chemistry learning.

单项选择题

According to Dr. Jeol Hiderbrand what accounts for his ageless energy

A．His ancestors.
B．His parents.
C．Heredity.
D．Hard working.