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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Ladies and gentlemen, welcome to Dalian, a famous summer resort ( 避暑胜地 ) and one of the best tourist cities in China. With clear sky, green mountains, blue seas, fine beaches, clean streets and lovely...
A.
comes in the best season.
B.
is here to join more tourists
C.
may not stand the heat here.
D.
is traveling back home.
【单选题】大鼠长期饲喂寒凉药，对自主神经系统功能的影响是
A.
心率加快
B.
尿中17-羟皮质类固醇排出量增多
C.
尿中儿茶酚胺排出量减少
D.
血浆中和肾上腺内多巴胺β-羟化酶活性提高
E.
耗氧量增加