The client is taking medication to control his cancer pain. Which of the following statements indicates that the client needs further instruction

A. "I should take my medication around-the-clock to control my pain. "
B. "I should skip doses periodically so I don’t get hooked on my drugs. "
C. "It is okay to take my pain medication even if I am not having any pain. "
D. "I should contact the oncology nurse if my pain is not effectively controlled. "

下列有关葡萄糖的说法错误的是 [ ]

A．葡萄糖的分子式是C₆H₁₂O₆

B．葡萄糖能发生银镜反应

C．葡萄糖是人体重要的能量来源

D．葡萄糖属于高分子化合物