绿卡具有通存通兑、跨行通用、（）的特点。(五级、四级)
参考答案：安全快捷
蕨类植物每一维管束的特点是
A．外有纤维
B．外有石细胞环
C．外有草酸钙结晶
D．外围有内皮层
E．外有粘液腔
To handle the financial crisis, the new government has to work more ______ with other nations, especially the less-affected ones.
A．formally
B．smoothly
C．carefully
D．closely
