火山爆发产生的火山碎屑物可分为()三种类型,统称为“三屑”,是火山碎屑岩分类命名的主要依据。
参考答案:岩屑、晶屑和玻屑
阅读短文,选择正确答案。
Hello, I'm Amy. I'm twelve years old. I go to school from Monday to Friday. We have four classes in the
morning and two in the afternoon. On Mondays we have math, Chinese and music. On Tuesdays we have
English and science. I like Wednesdays and Fridays, because we have computer classes. I like computer class.
I like my computer teacher. He is tall and cool. He's very smart.
1. How many classes does Amy have in the morning?
A. Two.
B. Four.
C. Six.
2. What do we have on Mondays?
A. Math, Chinese and music.
B. Computer class.
C. English and math.
3. I like ____________.
A. Mondays and Tuesdays
B. Wednesdays and Fridays
C. Tuesdays and Wednesdays
4. What's my computer teacher like?
A. He's tall and cool.
B. I like computer class.
C. Yes, he is.
5. How old is Amy?
A. 13.
B. 12.
C. 14.
男性,46岁,1周前因过敏性紫癜住院静脉点滴甲基强的松龙,3天前受凉后出现下腹痛,尿频,1天来尿中带血丝,尿液分析结果为pH7.0,SG1.105,Pm0.3g/L,WBC30/μl,RBC22/μl
尿培养最可能出现的情况是()。
A.革兰氏阴性菌
B.艾希大肠杆菌
C.克雷白杆菌
D.厌氧菌
E.金黄色葡萄球菌