1. After the rain stopped, the sun began to ____ from behind the dark clouds. (A) emerge (B) conceal (C) vanish (D) sweep

11. The vaccine uses a conjugate protein, in which a polysaccharide antigen is covalently attached to a protein carrier, to enhance the immune response. What does conjugate most nearly mean here? (A) Fragmented into smaller components (B) Chemically linked to another molecule (C) Attenuated to reduce pathogenicity (D) Purified from other components