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What trouble did Minteer and Klotzbach have in their research？
A．They had trouble keeping enzymes in fuel cells active.
B．They had trouble keeping biological cells active.
C．They had trouble producing fresh enzymes.
D．They had trouble finding mechanism for producing enzymes.
答案
更多“What trouble did Minteer and Klotzbach have in their research？A．They had trouble keeping e”相关的问题
第1题
What trouble did the man ever have in writing a poem？
A．Finding out a rhymed word with panda.
B．Bringing the poem about panda to an end.
C．Adding the name "Amanda" into a poem.
D．Replacing panda with another word.
第2题
What was the trouble for the woman when she was in Turkey？
A．The Turkish people did tricks on her.
B．She didn't know how to ask for more food.
C．She ate too much and became fatter.
D．She liked the Turkish tea and drank too much.
第3题
A.They had trouble keeping enzymes in fuel cells active.
B.They had trouble keeping biological cells active.
C.They had trouble producing fresh enzymes.
D.They had trouble finding mechanism for producing enzymes.
第4题
What trouble did the woman have in Turkey？
A．The Turkish people played tricks on her.
B．She didn't know how to ask for more food.
C．She ate too much and became fat.
D．She liked the Turkish tea and drank too much.
第5题
What did the author and her husband do when pangaea had some engine trouble？
A．They went to Haiti, Cuba and Jamaica for emergency repairs.
B．They sought advice from their friends and relatives at home.
C．I hey read advice offered on the Internet about repair facilities.
D．They appealed to search-and-rescue authorities for help.
第6题
(28)
A．He knows about your problem.
B．How did you find out about the trouble？
C．Can you take care of any difficulties？
D．There are homework problems due today.
第7题
M: It's true! He did have difficulties but all in all it couldn't have turned out better.
What did you learn about Mr. Rogers' project？
A．It was hard going.
B．It was fairly successful.
C．It failed for lack of money.
D．It stopped for want of land.
第8题
听力原文：W: You didn't have too much trouble fixing your car engine, did you？
M: It only took me most of the day.
Q: What does the man mean？
(15)
A．He had no time fixing his car engine.
B．Fixing his car engine took him a lot of time.
C．He only fixed part of his car engine.
D．His car engine turned out well.
第9题
听力原文：W: Did Mary meet you at the airport yesterday？
M: Yes. But she sure got tired waiting for my flight to get in. We circled the airport for three hours.
Q: What does the man mean？
(15)
A．His flight arrived late.
B．His flight took three hours.
C．Mary had a long drive to the airport.
D．Mary had trouble finding the airport.
第10题
M: No. I said free lunches, the children don't have to pay for them, And there are many lunches involved, you know, a lot more than three.
Q: What did the man say about the lunches？
(17)
A．It involved a few lunches.
B．There were free lunches.
C．There were three lunches.
D．There were more than free lunches.
