9ac Hypothetical elementary particle that can travel faster than light.(7) (t????o?) could it be Typhoon? 15ac Positive electrode in an electrolytic cell,towards which negative particles (anions) are attracted (5) (??o??) 19ac US entrepreneur and philanthropist who co-founded Microsoft with Paul Allen in1975 (4.5) (B???,?a???) 27ac Figure-skating jump in which one-and a half,two-and-a-half or three-and-a-half turns are performed in mid air.(4) (????)