数学方面，学会了100以内的认读，学会了单、双数的概念。
An creates a completely separate browsing context with its own window object, its own document, and most importantly;its own prototype chain. A function hooked on HTMLMediaElement.prototype in the parent window is not the same object as HTMLMediaElement.prototype in the iframe’s window. They’re entirely separate objects. If fermaw’s audio element lived inside an iframe, my prototype hook in the parent window would never fire.
，更多细节参见WPS官方版本下载
4In 2007, Barrangou et al. demonstrated for the first time the function of CRISPR/Cas9 as a defensive mechanism of bacteria against bacteriophage attacks by a technique called “plaquing” which builds upon the technique of “plating” bacteria on agar. Plaques of viruses on agar are areas without growth of bacteria due to viral attacks.
Credit: Liam Daniel / Netflix
尤其值得注意的是，部分名校的博士招生规模，更是大幅提高，如北京大学博士招生规模超过4000人，清华大学博士招生规模超过4500人，上海交大、浙江大学博士招生规模达到5000人。这一方面会影响本校的博士招生门槛，另一方面也会影响申请其他高校的博士生源质量。可以说，有一些处在985中游的高校，来申请读博的博士生，很大一部分都是2015年时根本没有希望被录取的学生。加上我国在2010年后，硕士研究生也大幅扩招，部分高校因培养规模大，缺乏对硕士培养质量的严格把关，博士生源质量能不下降吗？