A:抗体
B:溶菌酶
C:记忆细胞
D:吞噬细胞
不同时代的宣传画体现了不同时代的风貌。下面这两幅夸张的宣传画体现出的时代背景是( )
– The East Lake is not far from the Yellow Crane Tower, so you can easily visit _________ in a day. – Fantastic! I can't wait for it.