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【单选题】
根据1976年国际生化学会酶学委员会的规定,酶的一个国际单位是指:A.
最适条件下,每小时催化生成1克产物的酶量
B.
37℃下,每分钟催化生成1mg产物的酶量
C.
25℃,其它为最适条件,每分钟催化生成lumol产物的酶量
D.
37℃,其它为最适条件,每分钟催化生成1μmol产物的酶量
E.
在特定条件下,每分钟催化生成1μmol产物的酶量
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举一反三
【单选题】Every year Wuyi Mountains welcome millions of tourists all over the world.
A.
各国
B.
世界
C.
墙壁
【简答题】My home village lies __________ the Mountains in Fujian Province.
【单选题】Since the beginning of the vacation , I ______across the country , and my next stop is the Wuyi Mountains.
A.
had traveled
B.
will travel
C.
have been traveling
D.
was traveling
【单选题】He suggests going to the Wuyi Mountains by plane. But I think it costs too much.
A.
建议
B.
梦想
C.
相信
【单选题】Since the beginning of the vacation,I______across the country,and my next stop is the Wuyi Mountains.
A.
had traveled
B.
will travel
C.
have been traveling
【简答题】What is the setting of the story? Can you think about the four “wh-” words: who, where, what, and why.
【简答题】A) what B) where C) why D) how
【简答题】[A] when [B] what [C] where [D] why
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