四大家鱼指？
A. 青鱼
B. 草鱼
C. 鲢鱼
D. 鳙鱼
水产生态养殖的两大技术包括大宗淡水鱼池塘健康养殖技术和池塘循环水养殖技术。
A. 对
B. 错
升旗仪式开始时，我们看到天安门广场上人山人海。
A. When the flag-raising ceremony began/started, we saw people mountain people sea on Tiananmen Square.
B. When the flag-raising ceremony began/started, we saw a large crowd of people were crowded on Tiananmen Square.
改革开放以来，新鲜事物如雨后春笋般涌现出来。
A. Since China’s reform and opening-up policy was carried out, new things have appeared/emerged like bamboo shoots after the spring rain.
B. Since China’s reform and opening-up policy was carried out, new things have appeared/emerged like mushrooms after the spring rain.
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