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问题 选择题

食品安全问题人们非常关注．下列食物不会危害人体健康的是（　　）

A．变质的粮食和蔬菜

B．用鲜牛奶制成的酸奶

C．用甲醛浸泡的海产品

D．用亚硝酸钠（NaNO2）腌渍的食品

答案

A、变质的粮食和蔬菜会危害人体健康．错误；

B、用鲜牛奶制成的酸奶不会危害人体健康．正确；

C、用甲醛浸泡的海产品会危害人体健康．错误；

D、用亚硝酸钠腌渍的食品会危害人体健康．错误．

故选B．

阅读理解
SUNNY SCHOOL
We are a bilingual（双语）school for children of 6-15. We want a cook, a library assistant, a sports coach and a language teacher.
Job
Age
Language
Skill
Other terms
（其它条件）
cook
25~40
Chinese
can cook Chinese and Western food
healthy
library assistant
20~35
Chinese,
English
know about all kinds of books
careful
sports coach
20~40
Chinese, English
major in（主修）P.E.
healthy,
strong
teacher
30~45
Chinese,
English
major in English
--
小题1:Who CAN’T go to Sunny School?
A．An eighteen-year-old kid.B．An eleven-year-old boy.
C．A fifteen-year-old girl.D．A fourteen-year-old child.
小题2:Who is NOT wanted by Sunny School?
A．A sports coach.B．An English teacher.
C．A library assistant. D．A math teacher.
小题3:The Sunny School wants a teacher __________.
A．aged between 25 and 40
B．who can cook Western food
C．who is careful and strong
D．who can speak English and Chinese
查看答案
选择题

某同学在设计实验中使用了以下数据：①用托盘天平称取无水Na2CO3 5.2g ②用量筒取浓盐酸6.34毫升 ③用广泛PH试纸测得的PH值为7.8 ④用盐酸滴定Na2CO3溶液用去盐酸11.20毫升，其中数据不合理的是:

A．①③

B．①④

C．②③

D．②④
查看答案