下面哪项是诊断支原体肺炎的比较可靠的方法（）。

A.X线表现有多种形态的浸润影、

B.炎症呈段性分布

C.外周血白细胞不增高

D.血清支原体IgM抗体的测定

E.伴胸腔积液

用括号内所给动词的适当形式填空。

小题1:Betty is often seen ______(help) the old man with his housework.

小题2:He prefers ______(take) part in the public activities rather than stay at home alone.

小题3:They ______(agree) with each other, so they argued for a long time.

小题4:Animals are our friends, so ______(protect) them is our duty.

小题5:You have ______(award) a scholarship to study violin at our School of Music.