土壤受生物性污染可引起的疾病是（）
A.寄生虫病
B.破伤风杆菌病
C.炭疽病
D.伤寒杆菌感染
E.以上都是
参考答案：E
Woman: Hi, Michael. I can hardly recognize you. Why are you dressed up today Are you going to the theatreMan: No. Actually, I just had an interview at a photo studio this morning.Question: What do we learn about Michael from this conversation
A．He's going to visit a photo studio.
B．He's just had his picture taken.
C．He's on the way to the theatre.
D．He's just returned from a job interview.
市场风险的种类不包括（ ）。
A．顾客需求风险
B．市场成长的风险
C．商业机密泄露的风险
D．竞争技术与产品的威胁与替代
