一种收录机，今年按去年售价的八折出售，今年价格是去年的______，比去年降价了

做馒头时，面团发酵后变酸，要除去酸味同时使馒头松软可口，可在面团中加入

A．NaOH

B．CaO

C．NaHCO₃

D．NaCl

阅读理解

     Throughout the Depression (经济萧条) years,my brothers,sisters and I often heard our granny say,

"One of these days,my ship is coming in."Of course Granny's ship was just a dream-her escape from the

reality of being poor most of her life.But to us it was very real.

     Our family got by with the barest (最少) of necessities.There rarely was enough left over for special

desires.So if we wished for other things,we told Granny about them,and she would plan for them to be

aboard her ship.

      At times we kids worried greatly as to how the ship was going to arrive at Granny's house in the

deep pine woods of East Texas,miles from any waterway.One day when Granny was sitting with us on

her front porch,we asked her how she expected the ship to come.Shifting in her rocking chair,she

expected the ship to come.Shifting in her rocking chair,she pointed to the beautiful clouds floating in the

bright blue sky.

      "Why,children," she explained,"Granny's ship has big beautiful sails.Some day it will rise up on clouds

like those,and come floating right up to the front door."

     As we grew older,our childish wishes for BB guns,baby dolls and mohair sweaters were replaced by

dreams of an education,a job or a lovely wedding.We told Granny of those goals and she put each one

aboard her ship.

     Granny has been gone a long time now,but I still remember how we sat with her on the porch scanning

the skies.She never told us the name of her ship,but I think perhaps it was "Hope",for Granny told us to

have patience,to reach beyond our limitation,and many of our dreams and wishes did come true.

      Even now,sometimes,when the skies are brilliantly blue,with soft puffy clouds sailing along with the

breeze (微风),I look up-to see Granny's ship.Its sails are full and proud.It is a beautiful ship,carrying a

wonderful cargo of many packages of many sizes-all marked "From Granny.With Love".

1. From the text,we know________.

A. Granny has been dead for a long time

B. Granny used to have unpractical ideas about life

C. Granny's ship arrived at last

D. Granny has moved to the city

2. We can infer from the text that the writer's family lived________.

A. in a city  

B. in Granny's ship

C. in a mountainous village 

 D. at the seaside

3. What does the underlined word "them" in the second paragraph refer to?

A. Our necessities.  

B. Our wishes.

C. The children.  

D. Package.

正常人直腿抬高试验时，神经根可在神经根管内滑动（）

A.0～1mm

B.2～5mm

C.6～8mm

D.8mm以上

E.无滑动

我国《证券法》规定，累计债券余额不超过公司净资产的( )。

A．30%
B．40%
C．50%
D．60%

湍流