热射病的特征性临床表现为（）
A．体温升高，达39－40℃
B．大量出汗，水盐平衡失调
C．肌肉痉挛，疼痛
D．血压下降，面色苍白
参考答案：A
电解池反应不是（）进行的。
Lincoln, who many regard as one of our great presidents, was often ______ despite his reputation of telling good jokes.
A．bright
B．optimistic
C．gloomy
D．cheerful
