Which of the following best describes the placental components of dizygotic twins?? ;One placenta,two amniotic sacs,two chorions|Two placentas,two amniotic sacs,one chorion|One placenta,two amniotic sacs,one chorion|Two placentas,two amniotic sacs,two chorions
举一反三
- Finish by putting your_(7)___ on your hips. One, two, three one, two,three. One, two, three one, two, three.
- Finish by putting your_(7)___ on your hips. One, two, three one, two,three. One, two, three one, two, three.
- —How long will you stay there —For (). A: one and two days B: one and two day C: one or two day D: a day or two
- 纽约步的节拍是（ ） 。 A: two and three and four one B: one two three four and one C: one two three four D: two and three four one
- What class are you in? I think you are in ________. A: Class Two, Grade One B: Grade One, Class Two C: Class two, Grade One D: Grade one, Class two