A:has come; tell
B:has come; told
C:came; should come
D:had come; told
豆类、动物肝脏中含有丰富的铁和锌,这里的“铁”、“锌”是指( )
35+4=____
61+8=____
42+30=____
50+40=____
60+7=____
87-50=____
64+5=____
76-30=____