凡是基因工程操作所用的一切塑料器具(eppendorf管、tip等),在使用前都应装入盒子和瓶子中灭菌,且装盒或装瓶过程中都应采用镊子或戴上一次性手套进行操作,不能直接用手去拿,严防手上杂酶污染

1、正确
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正确

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英语翻译:预算

Britainhas,forcenturies,beenslowlytiltingwith________.

A、theNorth-WestslowlyrisingandtheSouth-Eastslowlysinking
B、theNorth-EastslowlyrisingandtheSouth-Westslowlysinking
C、theSouth-EastslowlyrisingandtheSouth-Westslowlysinking
D、theSouth-WestslowlyrisingandtheNorth-Eastslowlysinking

句子写作:Thehouse____isstillstanding.

重写句子:Hockeyisasportwhichispopularinmanycountriesaroundtheworld.(simplesentence)

句子写作:Thepianoplayerbegantosingloudly.

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