从我国宪法典的组成结构上来看，一般是由宪法典本文和（）构成的。
参考答案：宪法修正案
怀疑伤寒感染，进行肥达试验，病程中逐周复查，若效价依次递增或恢复期效价增加多少倍始有意义（）
A.≥2
B.≥4
C.≥8
D.≥16
E.≥32
The ___ bear was cornered in the forest __ hunters were closing for the kill.
A．frightened; where
B．frightening; when
C．frightened; as
D．frightening; before
