【单选题】下列收集装置,可以用来收集氧气的是 [ ]
【简答题】连词成句 (每题1分,本题5分) 小题1:is water there some bottle in the (.) 小题2: January after comes February (.) 小题3:take to books Let’s the Mr. Sun (.) 小题4:does what she have for supper(?) 小题5...
【简答题】In the following article, some sentences or paragraphs have been removed. For questions 1 to 5, choose the most suitable one from the list AF to fit into each of the numbered gaps. There is ONE which ...
【简答题】Inthe following article, some paragraphs have been removed. For Questions 1~5, choose the most suitable paragraphfrom the list A~F to fit intoeach of the numbered gaps. There is ONE paragraph which do...
【单选题】The text Nettles is included in the short story collection ( ).
A.
Lives of Girls and Women
B.
Hateship, Friendship, Courtship,Loveship,Marriage
【单选题】Which of the following is NOT included in the short-term goal of language study?
A.
training listening comprehension
B.
correcting pronunciation s
C.
writing the written codes
D.
using the target language as the native speakers
【简答题】(12分)根据下列实验装置回答问题。 (1)实验室用高锰酸钾制取氧气的发生装置是 ,收集装置是 ,反应的化学方程式是 。 (2)实验室用来制取二氧化碳的方程式是 ,装置是 ,如何检验已收集满 ;此装置还可以用于实验室制取氧气,反应方程式是 。 (3)查阅资料:氨气是一种密度比空气小,且极易溶于水的气体,可以用加热氯化铵和氢氧化钙固体混合物制取。根据资料,制取氨气应选择的发生装置是 ,收集装置是 。