何种射线可致皮肤癌
A．紫外线B．可见光C．微波D．红外线E．X射线和γ射线
参考答案：A
They are of _____ height, but I think Robert _____ the job. [ ]
A. equally; is equal
B. equal; is equal to
C. equal; equals
D. equally; is equaled
以下不属于免疫器官的是（）
A.骨髓
B.肝脏
C.胸腺
D.脾
E.淋巴结
