转运氨基酸的RNA是（）
A.rRNA
B.mRNA
C.tRNA
D.hnRNA
E.snRNA
参考答案：C
大鼠易于致敏，适于作过敏性研究。
There aren't _____ trees near the house. There is only one. [ ]
A. any
B. some
C. many
D. much
