写出划线词语的反义词。
①它们在树枝间来回跳动，婉转地歌唱，非常惹人喜爱。____
②天气严寒，它怕冷。____
③“一定会飞回来！”男孩肯定地说。____
④他已经知道，男孩是诚实的。____
请回答下列与显微镜操作有关的问题：
△ABC中，AB=AC，BD平分∠ABC交AC边于点D，∠BDC=75°，则∠A的度数是（ ）
A: Hello, Kate. ____
B: That's beautiful. I like it.
A: ____
B: I need four.
B: They're funny.
A: You can also buy a T-shirt for your friend.
B: ____
A. Good idea.
B. What about these caps?
C. Come and look at this cap.
D. How many caps do you need?
E. Let's go.
