A：用于检测还原糖的斐林试剂甲液和乙液可直接用于蛋白质的鉴定
B：脂肪的检测需借助显微镜才能看到被染成橘黄色的脂肪颗粒
C：检测还原糖时，要在加入斐林试剂甲液摇匀后，再加乙液
D：用于检测蛋白质的双缩脲试剂A液与B液混合均匀后，再加入到含样液的试管中，且需现配现用
有关生物的生活环境叙述，正确的是（ ）
Can you hear a train?(作肯定回答) ____
I like school days. I can learn many things from school. We have four classes in the morning and two in the afternoon. I like weekends, too. We don't go to school on Saturdays and Sundays. I often play ping-pong and play basketball on Saturday morning. I often play the violin (小提琴) on Saturday afternoon. I often do homework and play football on Sunday morning. I often go to the park on Sunday afternoon.
