In our life，there are two different types of dreamers，一low-recall dreamers and high-recall dreamers．According to researchers at the Lyon Nero-science Research Center in France，high-recall dreamers reported they remembered their dreams almost every day while low-recall dreamers said they only remembered their dreams once or twice a month，reported Live Science．
   Perrine Ruby，a lead scientist at the research center in Lyon，studied 41 people （21 high-recall dreamers and 20 low-recall dreamers） and recorded their brain activity．She found that a part of the brain called the temporo-parietal junction（顳頂葉交界處）was more active in high-recall dreamers．This was true both when they were sleeping and awake．This area of the brain is responsible for collecting and processing information from the outside world．This means that high-recall dreamers are more sensitive to what is happening around them．For example，when they are awake，they respond more strongly to hearing their own names．When they are sleeping，they tend to be woken up more easily by sounds and movements．
   By closely studying people's brain activity，Ruby found that high-recall dreamers have twice as much "wakefulness time" during sleep as low-recall dreamers do．And it is during these short periods of wakefulness that the brain memorizes dreams．
   This is not hard to understand．Just try to think of your own sleeping experience．If you are restless during the night，you are more likely to remember your dreams，but if you sleep well and soundly，you tend to remember very little in the morning．This is because "you never get a chance to remember"，Robert Stickgold，a Harvard Medical School researcher，told The Washington Post．
   As another research project at the University of Turku in Finland showed，dream content can also affect our memory．Negative dreams are easier to recall than ordinary dreams．Nightmares are often recalled because they are emotionally negative，and such dreams cause fear．

（1）What can we know about high-recall dreamers according to the article？

B

B

A．They have very little brain activity when they sleep．
B．They can remember their dreams clearly．
C．They don't know how to describe their dreams．
D．They can't remember their dreams．
（2）Which is true about low-recall dreamers compared to high-recall dreamers？

A

A

A．They have higher quality sleep．
B．They have more sleepless nights
C．They are more easily woken at night．
D．They respond faster when hearing their names．
（3）What is the main purpose of the second to last paragraph？

A

A

A．To explain Ruby's findings．
B．To attract readers，interest in future studies．
C．To show the advantages of being a low-recall dreamer．
D．To suggest what to do to become a low-recall dreamer．
（4）What did the research project in Finland find？

D

D

A．Ordinary dreams can help our brain rest．
B．Dreams are often affected by our emotions．
C．Nightmares often happen when we don't sleep well．
D．Negative dreams are more likely to be recalled．