They were ______ little children that they didn’t know what to do.
A.so
B.such
C.as
D.too
答案:B
流域汇流历时在建库后将比建库前要()。
ZD6系列电动转辙机检查块的上平面应低于表示杆或锁闭表示杆的上平面()。
A.0.1~0.8mm
B.0.2~0.8mm
C.0.3~0.8mm
D.0.4~0.8mm