半规管壶腹嵴的适宜刺激是（）
A.直线加速运动
B.直线减速运动
C.直线变速运动
D.旋转变速运动
E.旋转匀速运动
参考答案：D
用正确的冠词a，an，the填空（不填则画“／”）。
1. I have _____ beautiful pen. _____ pen is blue.
2. It's_____dog. Its color is _____ black.
3. _____ moon is big and bright (明亮的).
4. This is _____ jacket. It's _____ orange jacket.
5. Look at _____ boy. He is _____ English boy.
肃然起敬sù rán qǐ jìng
