空气净化用竹炭按同一批次任意抽检,每个抽检质量不少于()。
A.500g
B.1000g
C.2000g
D.3000g
参考答案:B
文中共有10处语言错误,每句最多有两处,每处错误仅涉及一个单词的增加、删除或修改。
增加:把缺词处加个漏字符号(∧),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:在错的词下划一横线,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。
Last year I spent my the first Thanksgiving Day in my own house. I have never cooked Thanksgiving dinner before, so I wanted to be special. I spent what seemed like forever cooking, and to my surprised it came out looking perfectly! Then I realized that I had forgotten my soft drinks at the store but I ran out to get them away before the guests arrived. I was away for no more than 15 minute. When I returned back, I found my turkey on the floor surrounding by a greedy cat and a dog with turkey bits in their mouths.
六价铬与二苯碳酰二肼生成有色络合物,该络合物的稳定时间与六价络的浓度无关。