埋弧焊时焊剂堆积高度一般在()范围比较合适。
A．2.5～3.5cm
B．6.5～7.5cm
C．2.5～3.5mm
D．4.5～5.5mm
参考答案：A
给下列句子排序。(首句和尾句已标出)
( ) What's the matter?
( 7 ) Of course! Let's take her to see the doctor.
( 1 ) How does Lisa feel?
( ) She should see the doctor, right?
( ) She feels sick.
( ) She has a fever.
( ) En. She might have the flu.
（）儿童的主要发展任务是获得主动感，克服内疚感，体验着目的的实现。
A.婴儿期
B.学前期
C.学龄期
D.青年期
