A:that;what
B:what;that
C:what;what
D:that;that
胚胎发育所需要的营养物质主要来自于( )
执行如图所示的程序框图,则输出的k的值是( )
流畅—____ 创造—____ 浓郁—____
慢慢—____ 吸引—____ 准确—____