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【简答题】
淘汰值是在考虑种子生产者利益和有较少失误的基础上，将样本内观察到的变异株数与规定的标准比较，做出接受或淘汰种子批决定的数值，请指出一般在哪些情况下可以使用淘汰值，并简要说明理由。
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【简答题】幼儿园课程
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A.
he neighbors ________ for a party.
B.
have prepared
C.
are preparing
D.
prepare
E.
will prepare
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A.
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will be tested
C.
are being tested
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have been tested
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