单项选择题
What do you suppose the author will go on to discuss in the following paragraphs（）
A．the brain system. B．functions of kidneys C．other human organs related to the kidneys D．reactions of the body to stress and danger
单项选择题 Which of the following is NOT true（）
单项选择题 What could be said about the adrenalin （）
单项选择题 It is （）that mainly helps you respond to a dangerous or stressful situation（）
