救援三角架应放置在水平、()的地面上,延长钢架至理想的长度,用提供的拉针锁住钢架。
A.倾斜
B.松软
C.坚硬
参考答案:C
按照《国际展览公约》规定,任何国家只有在()以后,才能申请举办世博会。
A.参加过一届世博会
B.申请加入国际展览局,成为其成员国
C.成为国际展览局执行委员会成员
He ______ as a national hero for winning the first gold medal for his country in the Olympics.
A.considered
B.was considered
C.has considered
D.has been considered