A：a
B：an
C：the
— ______ people travel every year?
— Perhaps when we are talking about it, more than 100 planes have taken off around the world.
以下给出的各数中不可能是八进制数的是（ ）
甲、乙两名同学在参加体育中考前各作了5次投掷实心球的测试，甲、乙所测得的成绩的平均数相同，且甲、乙成绩的方差分别为0.62、0.72，那么（ ）
