一组数据的偏态系数为1.3，表明该组数据的分布是（）。
A.正态分布
B.平顶分布
C.左偏分布
D.右偏分布
参考答案：D
小题1:Tom can't join the summer camp because he _______.
A．doesn't speak English well
B．doesn't like the university
C．is 20 years old
D．isn't a Canadian小题2: How much will you pay when you visit Tate Modem Art Gallery with your parents?
A．￥5
B．￥10.
C．￥15
D．It's free.小题3: Where can we see the above reading?
A．On a poster.
B．In a textbook.
C．In a letter.
D．In a guide book.
注重质量，讲究信誉的具体要求是：树立质量第一、信誉为重的观念，提高技能，严守（），尽心操作。
A、纪律
B、规章
C、规程
D、规范
speak English well
a textbook. 
uide book.