心境是一种
A．正性情绪
B．负性情绪
C．情感
D．抑郁情绪
E．情绪状态
参考答案：E
解析：情绪状态包括心境与激情两种。
It was _____ terrible earthquake and ______ number of people who were killed reached more than 20,000.
A．a; the
B．the; a
C．the; the
D．a; a
钢筋混凝土用（）具有强度高、柔性好、无接头等优点，主要用于大跨度屋架及薄腹梁等的预应力钢筋。
A.钢丝
B.钢筋
C.钢管
D.型钢
