下列不属于天然鸡血石特征的是()。
A.硬度较小,能被铜针划伤
B.密度较大,用手掂有沉坠感
C.贴于面部有一丝温感
D.有“地子吃血”和“血照映地子”的现象
参考答案:C
His whole school education _____ only 2 years because of his illness.
A.added up
B.added up to
C.added to
D.was added up to
上关穴是下列何经腧穴:
A.足阳明胃经
B.足少阳胆经
C.足太阳膀胱经
D.手太阳小肠经
E.手少阳三焦经