题目

What Is a Boy? Between the innocence of babyhood and the seriousness of manhood we find a delightful creature called a “boy”. Boys come in different sizes, weights, and colors, but all boys have the same belief: to enjoy every second of every minute of every hour of every day and to fill the air with noise until the adult males pack them off to bed at night. Boys are found everywhere-on top of, under, inside of, climbing on, swinging from, running around, or jumping to. Mothers spoil them, little girls hate them, older sisters and brothers love them, and God protects them. A boy is TRUTH w下图是显微镜结构图，请据图回答。（1）对光时，转动[ ]__________，使低倍镜对准通光孔。（2）使用显微镜观察玻片，当镜筒下降时，眼睛应注意看[ ]__________，避免损坏破片。然后转动[ ]__________，使镜筒缓缓上升直到找到物象为止。（3）转动时，镜筒升降幅度很小的结构是[ ]__________。（4）把玻片标本放在[ ]__________，用[ ]__________压住，标本要正对通光孔中央。（5）在观察时，为了使视野中偏左上方的细胞移到视野中央，可向___________移到装片。