听力原文:M: Did you take these pictures? They are very good.
W: Yes, I think they turned out very well too. I like to bring my camera with me wherever I go. In that way if I see something attractive I can snap a picture of it.
M: Carrying a big camera round is too much trouble for me.
W: My camera is really small enough. Here let me show you.
M: That is a compact camera. But you must know a lot about photography to get such professional looking results.
W: Not necessarily. This camera is simple to work.
M: Does this model come with a flash attachment for indoor shot?
W: Better than that. It has a built-in electronic flash and an automatic focus too. I don't even have to worry about focusing.
M: That's what I need. When I take pictures, they usually come out blurry because I don't adjust the lenses properly. And I hate photos that are out of focus. Is the camera like yours very expensive?
W: Less than you'd expect. Why don't you check the prices at Headfields Demonstrate? This model is on sale there last week.
M:I think I will. It certainly won't hurt to take a look.
As the conversation begins, what are the man and woman doing?
A.Looking at some photographs.
B.Selling cameras.
C.Teaching a photography class,
D.Repairing camera equipment,
第2题
关于含铁血黄素尿,错误的是
A、尿含铁血黄素试验阳性提示慢性血管内溶血
B、尿中有铁排出
C、只要存在慢性血管内溶血,本试验阳性结果可持续数周
D、慢性血管内溶血全过程本试验都是阳性
E、含铁血黄素尿由血红蛋白在肾小管上皮细胞内分解而成
第4题
下列有关尿含铁血黄素试验的说法,正确的是()。
A、是慢性血管内溶血的有为证据
B、含铁血黄素内主要为二价铁
C、急性溶血者尿中始终为阴性
D、经肝细胞分解为含铁血黄素
E、阴性时能排除血管内溶血
第5题
下列哪项有关尿含铁血黄素试验的说法,正确的是()
A、是慢性血管内溶血的有力证据
B、含铁血黄素内主要为二价铁
C、急性溶血者尿中始终为阴性
D、经肝细胞分解为含铁血黄素
E、阴性时能排除血管内溶血
第6题
下列有关尿含铁血黄素试验的说法,正确的是
A.是慢性血管内溶血的有力证据
B.含铁血黄素内主要为二价铁
C.急性溶血者尿中始终为阴性
D.经肝细胞分解为含铁血黄素
E.阴性时能排除血管内溶血
第7题
A.尿含铁血黄素试验阳性提示慢性血管内溶血
B.尿中有铁排出
C.只要存在慢性血管内溶血,本试验阳性结果可持续数周
D.慢性血管内溶血全过程本试验都是阳性
E.含铁血黄素尿由血红蛋白在肾小管上皮细胞内分解而成
第8题
A.尿含铁血黄素试验阳性提示慢性血管内溶血
B.尿中有铁排出
C.只要存在慢性血管内溶血,本试验阳性结果可持续数周
D.慢性血管内溶血全过程本试验都是阳性
E.含铁血黄素尿由血红蛋白在肾小管上皮细胞内分解而成
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