“一带一路”筹建的银行是（）。
A、金砖国家开发银行
B、东盟国家银行
C、东盟开发银行
D、亚洲基础设施投资银行
参考答案：A, D
The big fire in Shanghai, believed to ________ due to the burning of construction materials, caused
58 deaths and destroyed all the belongings of the people there.[ ]
A. have occurred
B. occur
C. have been occurring
D. be occurring
钢材随着其含碳量的（）而强度提高，其延性和冲击韧性呈现降低。
A．超过2%时
B．提高
C．不变
D．降低
