无菌容器、无菌溶液、无菌盘一经打开或铺好后，有效使用时间分别为（）A、4小时、4小时

请对下面的短文进行修改。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加，删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词。

2.只允许修改10处，多者（从第11处起）不计分。

Today is Sunday. The sky is full of sunshine, so does my life. At about 9:00 a.m., I go to the bookstore with

my friends. There was a lot of new books. I didn’t know what one to buy because these books were all useful to me. At 10:00, we went to cinema. The film was called The Earthquake of Tangshan but some people were waiting outside the booking office. It took us about two hours to see it. Having been seen the film, everyone was deeply moving. Some of my friends even burst into tear. That’s a really wonderful film. It is very worth seeing.

What a happy day! I hope tomorrow I will be even happier.

马—蛔虫—原生动物属于（）类型食物链

A、捕食

B、腐食

C、混合

D、寄生

男性，70岁，30多年吸烟史。半年前咳嗽，咳痰，发热。X线检查显示右肺整个下叶不均匀阴影，经抗感染治疗3周，咳痰、发热症状减轻，但仍有咳嗽，且为干咳。再次X线检查显示右肺门处不规则分叶状巨大阴影，边界不清，支气管镜活检，显微镜下见：细胞呈巢状排列，少部分细胞巢中央有层状角化物，细胞间可见细胞间桥，最可能的诊断是（）

A.肺鳞状细胞癌

B.大叶性肺炎

C.小叶性肺炎

D.慢性纤维空洞型肺结核

E.原发性肺结核

非农就业数据的来源是对机构进行调查，调查统计的目的是为了全面反映在美国的企业和政府部门中创造的失去的工作数量。

浓密机、陶瓷过滤机、压滤机都是选矿设备。