共显性复等位基因(alleles)遗传是构成HLA基因复合体高度多态性的主要遗传特点。()
参考答案：对
给下面的句子划分层次。
①人不犯我，②我不犯人；③人若犯我，④我必犯人
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So far we have done a lot to build a low-carbon economy, but it is ideal. We have to work still
harder.[ ]
A．far from
B．more than
C．next to
D．or else
