皮皮学，免费搜题
登录
搜题
【单选题】
Who is ______, John, Daniel or Jack?A.
old
B.
older
C.
oldest
D.
the oldest
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
【判断题】CODMn 测定时, KMnO4 和 Na2C2O4 可互相滴定。( ) 7 .酸雨是指 pH ≦ 7 的一切降水。( ) 8 .总铬测定时,用 NO2- 还原 KMnO4 ,然后再用 CO ( NH2 ) 2 还原过量 NO2- 。( )
A.
正确
B.
错误
【简答题】~ This is my teacher,
Miss Yang. ~ ______________.A. How are you , Miss Yang ? B. How do you do , teacher ? C. Nice to meet you , Miss Yang .
【单选题】~ This is my teacher, Miss Yang. ~ ______________.
A.
How are you , Miss Yang ?
B.
How do you do , teacher ?
C.
Nice to meet you , Miss Yang .
【单选题】—Why did Miss Yang look so worried when we saw her? —Because she wondered __________.
A.
where did the other students go
B.
when would the policeman come
C.
what her students have done during the trip
D.
if her students had survived the earthquake
相关题目：