在边坡（坡度＞30。）起挖或栽植花草树木按相应定额项目人工费乘以系数。（）
A.1.1
B.1.2
C.1.3
D.1.5
参考答案：B
“Well done, John! Not a single mistake ________ in your exam paper this time!” said the teacher．
A．you made
B．did you make
C．had you made
D．you have made
心脏病孕妇最危险的时期是（）
A.妊娠24～27周
B.妊娠28～31周
C.妊娠32～34周
D.妊娠35～38周
E.产褥期7天之后
