乘坐飞机发生空难的几率比选用其他交通工具而发生危险的几率要低得多。
参考答案:对
In the last 10 years we have all witnessed an impressive growth in our knowledge about the environments.
A.imperative
B.observable
C.sustainable
D.expressive
经办行空白支票发生遗失应在()小时内逐级上报一级分行。
A、12
B、24
C、36
D、48