单项选择题

In this passage, the author is mainly discussing the function of（）

A．the human brain
B．glands and systems in the body
C．the cortex of the adrenal gland
D．the medulla of the adrenal gland

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热门试题

单项选择题

The author can't remember his relatives clearly because（）

A．he didn't live very long with them
B．the family was extremely large
C．he was too young when he lived with them
D．he was fully occupied with observing natur

单项选择题

It can he inferred from the passage that the author was（）

A．a scientist as well as a naturalist
B．a naturalist but not a scientist
C．no more than a born naturalist
D．first of all a scientist