Read the followingpassage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. Most birds build nests in which they lay their eggs, but the emperor penguiin has no need of them. This bird lives in Antarctica and must endure (23)__________weather than anywhere else in the world. In order to (24)__________that its eggs are not harmed and that its chicks may hatch from them, the emperor penguin takes care of its eggs on a unique manner. An emperor penguin female lays a single egg. Once she lays the egg, the male penguin takes it and puts it (25)__________. There, the egg (26)__________by a layer of stomach fat that the penguin rests above the egg. Since emperor penguins lay their eggs right as winter begins in Antarctica, it is vital that the eggs remain protected from the elements. Therefore, for the next two months, the males incubate the eggs until the chicks finally hatch. During this entire (27)__________, the males look after the eggs while hardly even moving. 23. A. harsher B. the harshest C. as harsh as D. much of the harshest 24. A. ensure B. promise C. recall D. trust 25. A. on top of its feet B. with its feet at the top C. by the top foot D. at the foot of the top 26. A. protects B. is protecting C. is protected D. will protect 27. A. period B. periods C. periodical D. periodically Cíu iem tr ơi TvT ( giải thik rõ ràng ra giúp e vs ạ, e c.ơn)