His host family was very nice. They___________ make him feel at home.

a. got in the way of  b. went out of their way to  c. was in a way to d. by the way of

以下对病毒的描述不正确的是

A．细胞内寄生

B．属细胞型微生物

C．无复杂细胞结构

D．含DNA或RNA

E．体积微小