They're all so big and          ．      

读句子，将问句和答句连线。

①Whose dress is it? ____   A. It's pink.

②What colour is the shirt? ____   B. It's under the sofa.

③Is this your shirt, Dad? ____   C. No, it isn't.

④Where's my hat? ____   D. It's my sister's.

标志着二战以后美苏战时同盟关系正式破裂，双方之间冷战开始的是（    ）