皮皮学，免费搜题
登录
搜题
【单选题】
用浓硫酸消化天然的含氮有机化合物时,分解反应进行很慢,可借硫酸铜和硫酸钾(或硫酸钠)来促进,其中硫酸铜的作用是()A.
提高消化液沸点
B.
催化剂
C.
氧化剂
D.
还原剂
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The story is so interesting that he doesn’t _____ it even though it is time for lunch.
A.
get rid of
B.
keep away from
C.
break away from
D.
tear himself away from
【单选题】听力原文：W: It looks that you are ready to leave. M: I feel as though it's time for lunch, even though it's only 10 o'clock. What does the man mean?
A.
It's only eleven o'clock.
B.
It's time for lunch.
C.
His lunch time is ten o'clock.
D.
He is hungry but it's too early for lunch.
【简答题】昨天，我们学习了一个英文单词interest，今天又学习其形容词interesting，由于有了昨天的基础，今天学别快，这属于 （ ）
【简答题】It is time for___(have) lunch
【单选题】Is it time for lunch? ---- ____________.
A.
It’s no time
B.
No, it is
C.
Yes, it isn’t
D.
Yes, hurry, please.
相关题目：