You are ___________ to type quickly when talking to each other on QQ so the other person doesn't get bored.
A：suggested
B：supported
C：taught
D：supposed
已知关于x的多项式3x4-（m+5）x3+（n-1）x2-5x+3不含x3和x2，则（ ）
下列哪项不是构成蛋白质的氨基酸？
—Yes. But he can speak a little.
某历史网站上谈及文艺复兴产生的原因中，你认为其根本原因是( )
