无胚乳种子在形成过程中,胚乳为()所吸收。
A.胚
B.胚芽
C.子叶
D.外胚乳
参考答案:C
He wants to have ________ third cake,because ________ second one is too small.
A.the;the
B.the;a
C.a;the
D.a;a
子宫颈口开全是指
A.宫口开大3cm
B.宫口开大4cm
C.宫口开大8cm
D.宫口开大8—10cm
E.宫口开大10cm