空气的运动,可以分解为()和()两个分量。
参考答案:垂直;水平
It is several years since he ______ ill and his illness _______ great damage to his health. [ ]
A. fell; has done
B. fell; does
C. was; had done
D. felt; has done
风湿性疾病包括哪点()
A.以关节痛为主的一组疾病
B.肌肉疼痛性疾病
C.发热为特点的一组疾病
D.以发热、皮肤损害为特点的一组疾病
E.弥漫性结缔组织病及各种病因引起的关节和关节周围软组织疾病