白细胞减少症的主要治疗措施是()
A.病因治疗
B.使用糖皮质激素
C.使用促粒细胞生成药物
D.休息
E.增加营养
参考答案:A
If there _____ an art exhibition in our city next week, our class _____ go and enjoy it.
A.will be; would
B.would be, will
C.were, will
D.should be, would
元素“氦、铷、铯”等是用下列哪种科学方法发现的:
A.红外光谱
B.质谱
C.原子光谱
D.核磁共振谱