图乙中“发育中的幼雏”是由图甲中的哪一部分受精后发育来的？
A．①
B．②
C．③
D．④
答案：B
财务净现值，是指项目按行业的基准收益率或设定的目标收益率，将项目计算期内各年的净现金流量折算到开发活动起始点的现值之和，常表示为()。
A.NPY
B.NPV
C.MPY
D.MPV
American structuralism was very popular and influential in the 1930s and 1940s throughout the world. The two forerunners were ______.
A. Bloomfield and Chomsky B. Malinowski and FirthC. Franz Boas and Edward Sapir D. Halliday and Edward Sapir
