A:发热和寒颤
B:提高环境温度和寒颤
C:寒颤和出汗减少
D:剧烈运动和出汗增加
唐长安不仅是全国的____,还是当时____、____的城市之一。
—It's yellow.
__________ of students are in the room and nine ________ of them are girls.