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【单选题】
可以用来鉴别甲烷和乙烯的物质是A.
蒸馏水
B.
氢氧化钠溶液
C.
酸性高锰酸钾溶液
D.
浓硫酸
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【简答题】填出等差数列中所缺的项,并求其公差: 1,( ),( ),22,( ),...;d=( )
【简答题】阅读理解。 Dear friends, I’m a middle school student. I work hard and I’m good at studying, but I feel unhappy all day, because I have some problems. I am always stressed out (有压力的), because my parents and...
【简答题】填出等差数列中所缺的项,求其公差。 1, ,5, ,公差= 。
【单选题】Because I’m good at____ as well as making judgments.
A.
read
B.
to read
C.
reading
D.
reader
【简答题】填出一下等差数列中所缺的项,并求其公差 ( 1 ) 7 , 3 ,___,___,___,...... ( 2 ) 5 ,___,___,___,25
【简答题】完形填空。 I’m Mike and I come from England. Now I’m 1 at Beijing International School. I’m good 2 all my subjects and I enjoy 3 in China. In 4 , the Olympic s will be held (举行) in London. It’s 5 news ...
【单选题】I don’t like to negotiate a price when I shop at the market because I’m no good at ______.
A.
fiddling
B.
haggling
C.
juggling
D.
arguing
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