在种子虫害检验时，对潜伏感染害虫的种子可用（）检验方法。
A、肉眼检验
B、剖粒检验
C、染色检验
D、比重检验
参考答案：B, C, D
The survey ____ in our school last month shows that about three percent of the students are addicted to the Internet games.
A．conducted
B．was conducted
C．conducting
D．to be conducted
西湖龙井的四春茶又称（）。
A.旗枪
B.雀舌
C.莲心
D.梗片
