环甲肌瘫痪引起声调降低的原因
A．左半结肠癌B．右半结肠癌C．小肠肿瘤D．克罗恩病E．溃疡性结肠炎
参考答案：A
—_______ will you have the meeting?
—Tomorrow morning. [ ]
A. What
B. Why
C. When
D. Where
磁场方向是小磁针在磁场中某一点静止时______的指向．
