预防儿童少年慢性腰痛的主要方法是()。
A、限制腰部活动
B、合理安排腰部运动负荷
C、睡硬板床
D、注意培养正确姿势
参考答案:D
—The pet cat in your hand is very nice. Is it _______?
—Yes, but I'll give it to my friend Lucy as _______ birthday present. [ ]
A. you; her
B. your; her
C. yours; her
D. you; hers
考古学在我国属于什么学科范畴()
A、人类学
B、历史学
C、哲学
D、语言学