计算 －8＋4÷(－2) 结果为 ．
-10
题目分析： -8+4÷（-2）=-8-2=-10.
点评：此题要求熟练掌握有理数的混合运算，比较简单．
– She isn’t feeling very well today.
---You’re right. ______ to have caught cold.
A．It appears
B．It appears that
C．She appeared
D．She appears
以下( )是信用证关系中必须存在的当事人。
A．保兑行
B．通知行
C．开证行
D．受益人
