食品添加剂
参考答案：
能改善食品的色、香、味、形，以及为防腐和加工工艺的需要而加入食品中的化学合成或天然物质
如图表示用显徽镜观察草履虫玻片标本时，视野中物像的位置．若要将草履虫韵移到视野中央，载玻片的移动方向应是（ ）
A．左下方
B．右上方
C．右下方
D．左上方
The nurse instructs the female client concerning hormone replacement therapy for menopausal symptoms. Which of the following points should the nurse include in the client’s teaching plan()
A. Estrogen therapy eliminates the need for supplemental calcium intake.
B. Estrogen therapy can reduce the risk of menopausal bone loss.
C. The risk of uterine cancer is decreased after menopause.
D. Smoking is associated with a later onset of menopause.
