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。
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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.
如今，中国许多年轻人喜欢穿文化衫。
A. Nowadays，many young people in China like to wear cultural T-shirts.
B. Nowadays，many young people in China like to wear T-shirts with slogans on them.
香港反对派反对中央831政改决定,否决特区政府《2017年特首产生办法决议案》,其根本目的是( )
A. 试图增加反对派行政长官候选人的名额
B. 试图扩大直选议员名额
C. 要求行政长官候选人无需以爱国爱港为先决条件
D. 要求立法会议员率先普选
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