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【单选题】
关于品种纯度鉴定方法的优缺点比较，下列说法中准确是（）。A.
利用物理化学方法测定速度快，但是能够区别品种的种类较少
B.
籽粒形态鉴定简单快速，而且适用于各种作物
C.
电泳技术比较成熟，但与分子检测技术相比所需费用太高
D.
分子检测技术发展迅速，是目前品种纯度鉴定最准确、最可靠的方法
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【简答题】出口属于配额招标管理的货物，经营者凭《c中标配额证明》办理报关手续。（ ）
【简答题】Last summer, 15-year-old Bob had a problem. Like a lot of children. Bob was interested in doing many things. He liked dancing most and wanted to join a dancing group. But Bob’s high school didn’t have...
【单选题】His parents wanted to know how he _____ on with his new classmates.
A.
was getting
B.
gets
C.
is getting
D.
will get
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