单项选择题

Questions 14 to 16 are based on the following passage. At the end of the passage, you will be giv en 15 seconds to answer the questions.
Now, listen to the passage.
Which one is NOT true about the waterbeds

A．They can be heated by electric mat or infrared lamps.
B．They are made from tough plastic membrane.
C．They are the best choice in the scientific test.
D．They are much safer for the piglets but hard to control.
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单项选择题
What is NOT the benefit the piglets getting from sleeping on the waterbeds than otherwise
A．They can get much more weight.
B．They suffer many potential injuries.
C．Avoid the risk of possible early death.
D．They can eat much more than otherwise.
单项选择题
From the passage we know that piglets ______.
A．easily get crushed in the first weeks
B．does not like warm waterbeds in the beginning
C．generally like snuggling up to their mothers for warmth
D．are not happy wallowing in the mud
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