单项选择题

Questions 11--13 are based on the following passage. You now have 15 seconds to read Questions 11--13.
What is the most fundamental difference between plants and animals

A．Plants produce their own food but animals don’t.
B．Plant cells have a wall which is non-living in chemical nature but animal cells haven’t.
C．Plants are green but animals aren’t.
D．Plants can’t move but animals can.

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单项选择题

What button do you press if you want to listen again what has been played

A．Pause button.
B．Record button.
C．Forward button.
D．Rewind button.

单项选择题

What would happen if a small part of the plane were to crack

A．The plane would not go forward.
B．The plane would explode.
C．The plane would fall down.
D．The plane would fly slowly.

Questions 11--13 are based on the following passage. You now have 15 seconds to read Questions 11--13. What is the most fundamental difference between plants and animals 您的浏览器不支持 audio 元素。

Questions 11--13 are based on the following passage. You now have 15 seconds to read Questions 11--13.
What is the most fundamental difference between plants and animals