The outermost part of an insect's egg is（ ）
A: chorion
B: vitelline membrane
C: periplasm
D: egg nucleus
A: chorion
B: vitelline membrane
C: periplasm
D: egg nucleus
举一反三
- There is ______ on your nose. A: an egg B: the egg C: egg D: eggs
- What are two traditional Easter egg games? A: the Easter Egg Bump B: the Easter Egg Hunt C: the Easter Egg Roll D: the Easter Egg Crack
- RICKETY: FURNITURE :: A: petrified: forest B: alloyed: metal C: ragged: clothing D: speckled: egg E: spavined: insect
- 以下代码的输出结果是【】。food_counter = 0def addone(food):if food in food_counter:food_counter[food] += 1else:food_counter[food] = 1addone('egg')addone('milk')addone('egg')print(food_counter) A: {'egg':1, 'milk':1, 'egg':1} B: {'egg':1, 'milk':1} C: {'egg':2, 'milk':1} D: {'egg':2, 'milk':1, 'egg':1}
- Choose the correct sentence below. A: Sperm and egg cells are haploid cells B: The sperm is haploid, but the egg is diploid C: Sperm and egg are diploid cells D: The sperm is diploid, but the egg is haploid