【单选题】Ray Takyh urged the America government to______.
A.
stop seeing Iran as part of 'the axis of evil'
B.
hold nuclear talks with Iran with no conditions
C.
suspend the uranium enrichment program in Iran
D.
adopt a pragmatic rather than radical approach to Iran
【单选题】That is a beautiful kingdom _________ three mountains join together and steep mountains reached to the sky.
【简答题】系统与外界之间的分界面叫做边界,边界可以是实际存在的,也可以是_________;另外,边界可以是固定的,也可以是________。
【简答题】系统与外界之间的分界面叫做边界,边界可以是实际存在的,也可以是_________;另外,边界可以是固定的,也可以是________。
【单选题】酿热物发热的快慢、温度高低和持续时间的长短,主要取决于