①胚泡植入子宫内膜 ②细胞分裂和分化形成胚胎 ③在输卵管处形成受精卵
④初具人形,形成胎儿 ⑤胎儿发育成熟、分娩 ⑥受精卵分裂、形成胚泡
A.①③②⑤④⑥ | B.③①②⑤④⑥ | C.③⑥①②④⑤ | D.③②⑥①④⑤ |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2