根据上下文或括号里的汉语提示，在下面短文的空白处写出正确的单词或词组，使短文意思完整，

语句连贯。

     About more than a hundred years ago, an American produced a game. He called it 1.              (室内的)

tennis. The Americans were not interested in it 2.              (起初), but he sent it to his London friends and

it became very 3.              (流行的) in Britain. The game was then played across dining-room tables,

or 4.              (在地板上) with the net strung (用绳缚) 5.              (在……之间) two chairs. The

balls 6.             (由…制成) cork(软木)or rubber. The bats were made of wood. 7.              (几年之后) a

hollow (空心的) ball like the one we use today was invented. The game then 8.              (快速地) spread

all over the world. An Englishman once made a bat covered with rubber. He first sold the game in England

and called it "Ping-pong". "Ping" was the 9.              (声音) of the bat when it hit the ball, and "pang" was

the 10.              (第二) sound of the ball when it hit the table.

所谓漂移是指温度和溶液组分（），且参比电极电位稳定的条件下，电极电位随时间缓慢有序变化的程度。

A、变化

B、恒定

C、相同

D、特殊