题目内容

Fill in the blanks with the right words.(On / I n)the first floor, we have a gym, a swimming pool( with / and)a sauna. We also have ( the / a )playroom for kids here. The restaurant is on the second floor, and the bar is there, too.Outside, we (had /have )a tennis court.

查看答案
更多问题

A family of four, with two small children should choose the Garden Hotel instead of the Youth Hotel because they need childcare.

A. 对
B. 错

Price: 50 yuan per bed in a shared room with four beds.该句话可以翻译为 价格:四人间,床位合计50元。

A. 对
B. 错

S1: What kind of room would you like?S2: A double room, please. 对话中doubleroom 和twin room意思完全相同。

A. 对
B. 错

某大学生兴趣研究小组,为了验证“一种酶只能对一种底物或一类底物起催化作用”是否正确,设计了一个试验。请您指出下列试验中哪一组是对照组,哪一组是试验组?得出什么结论?仔细分析此试验是否合理?其中张三的试验步骤是这样的:(1)取4支试管,编上号,向1、2号试管内分别加 2mL淀粉溶液,向3号、4号试管内分别加2mL菊糖溶液;(2)向1号、3号试管内分别加2mL淀粉酶溶液,向2号、4号试管内加2mL清水,轻轻振荡试管,使液体混合均匀;(3)分别向4支试管内注入2mL斐林试剂,摇匀;(4)将4支试管放入乘有50-65℃温水的大烧杯中加热约2min,观察。试验结果表明2、3、4号试管无砖红色沉淀产生,而1号试管则产生砖红色沉淀。李四的试验步骤是这样的:(1)取2支试管,编上号,向试管内分别加 2mL蔗糖溶液;(2)向1号试管内加2mL乳糖酶溶液,向 2号试管内加2mL蔗糖酶溶液,轻轻振荡试管,使液体混合均匀;(3)分别向2支试管内注入2mL斐林试剂,摇匀;(4)将两支试管放入乘有50-65℃温水的大烧杯中加热约2min,观察。试验结果表明1号试管无砖红色沉淀产生,2号试管则产生砖红色沉淀。

答案查题题库