腹部最容易受伤的空腔脏器是
A．胃B．小肠C．结肠D．直肠E．十二指肠
参考答案：B
- -- What do you think of your parents?
--- They are always strict ____ our studies and they often make me ______ too much homework .
A．with , to do
B．in , to do
C．about , do
D．at , do
下面所列的学科信息门户中，属于综合性学科信息门户的是（）。
A、英国BUBLLNK
B、英国SOSIG
C、澳大利亚AVEL
D、中国CSDL
