麻疹的并发症有（）
A.支气管肺炎
B.心肌炎
C.喉炎
D.脑炎
E.亚急性硬化性全脑炎
参考答案：A, B, C, D, E
—The story is not easy for students to understand.
—I agree with you, ________ it’s not very long.
A．or
B．but
C．and
D．though
1978×298129812981-2980×197719771977=
