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【单选题】
M: I don ’ t know what to do. I have to drive to Chicago next Friday for my cousin wedding, but I have an English exam to prepare for W: Why don t you record your notes so you can study on the way? What will the man do next Friday?
A.
Take an exam
B.
Attend a wedding
C.
Make some recording
D.
Driving
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【简答题】标定KMnO 4 溶液的基准物质有______、______等。
【多选题】标定 KMnO 4 溶液的基准物质有( )
A.
草酸
B.
草酸钠
C.
Na 2 S 2 O 3
D.
Na 2 SO 4
【多选题】可用来标定KMnO 4 溶液的基准物质有()。
A.
Na 2 C 2 O 4
B.
H 2 C 2 O 4 •2H 2 O
C.
纯铁丝
D.
NH 4 Fe(SO 4 ) 2 •12H 2 O
【多选题】标定 KMnO 4 溶液的基准物质有:
A.
Na 2 C 2 O 4
B.
CaCO 3
C.
邻苯二甲酸氢钾
D.
纯铁丝
【单选题】I am extremely ______ at the way he always stares at me in the office.
A.
trouble
B.
worried
C.
annoyed
D.
anxious
【单选题】I am sorry, I am very sorry and I am extremely sorry.
A.
This sentence contains irony
B.
This sentence contains pun
C.
This sentence contains simile
D.
This sentence contains climax
【简答题】I am extremely grateful all the teachers their help.
【判断题】信息量大既是计算机网络教育资源的优点,也是其缺点
A.
正确
B.
错误
【判断题】用作标定 KMnO4溶液浓度的基准物质有:草酸、草酸钠。()
A.
正确
B.
错误
【简答题】矿井应当每两年制定综合防尘措施、预防和隔绝煤尘爆炸措施及管理制度,并组织实施。判断对错
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