问题 单项选择题 B型题

兴奋的突触传递中,“当突触前末梢接受一短串刺激时,虽然每次刺激都引发递质释放产生突触后电位,但后来的刺激引发的突触后电位要比前面的刺激引发的为大,引发的递质释放量也多,此效应消失得很快”属于()

A.突触易化

B.突触强化

C.突触可塑性

D.突触后电位

E.长时程强化

答案

参考答案:A

多选题
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    A purse containing a million dollars worth of jewelry was on its way back to its owner in Canada after

being forgotten on a bench in a town near San Francisco, police said.

    Shahla Ghannadian had entrusted(委托) her 2,000-dollar Louis Vuitton handbag and its precious

contents to her husband after they stopped at an ice cream shop in the city of Sausalito on Sunday,

according to authorities. He left it on a bench near a downtown parking lot, and the oversight was not

noticed until the couple was back at their hotel, said Sausalito police sergeant (警官) Kurtis Skoog. The

couple had traveled from Toronto to San Francisco for a daughter's wedding.

    The purse contained a Cartier watch, cash, and jewelry worn by the mother and the bride at the

ceremony, said Skoog. The gems included emeralds, pearls and diamonds, one of them a 12-karat stone, according to police. Ghannadian and her husband had been squeezing in a bit of sightseeing before

catching a flight back to Canada on Sunday night. Family members checked the bench, but the purse

was gone.

    Local resident John Suhroff walked into the police department the next day with the bag, its contents

intact(完整无缺的), Skoog said. Suhroff handed the bag to a clerk, saying it held "either costume or

junk jewelry".

    "We called the owner, and they were ecstatic (狂喜的)," said Skoog. A family friend picked up the

bag and was to take it to Ghannadian. The family indicated Suhroff is in line for a reward, but did not

specify an amount, Skoog said.

1. Which of the following is NOT included in the purse?

A. Some pearls.    

B. Some diamonds.    

C. A watch.        

D. 2,000 dollars.

2. The couple went to San Francisco to ________.      

A. travel to the city of Sausalito    

B. attend their daughter's wedding

C. see their relatives      

D. visit their friends

3. After the couple left the purse on a bench ________.

A. they went back their house      

B. their family member checked the bench

C. they flew back to Canada on Sunday morning

D. they left for New York

4. The underlined phrase "in line for" in the last paragraph means________.

A. to stand in line    

B. to refuse        

C. likely to get        

D. eager for

5. Which of the following title can be the fittest for the passage?

A. The Careless Couple                 

B. The Great Loss Came Back

C. The Unusual Way to USA              

D. A Noble Canadian Resident