—________? I don't remember lending you any money.
A：Did I
B：Did you
C：Do I
D：Do you
抛物线y2=16x的准线为____
有A、B、C三个带电小球，如果小球A带正电，小球C吸引小球B，小球B排斥小球A，那么小球B带____电；小球C带____电．（填“正”或“负”）．
根据拼音写汉字：
péng pàì
sī yǎ
lí hēi
____
zāo gāo
quán suō
kuí wú
