男生人数比女生多5%,就是女生人数比男生少5%.______.
5%÷(1+5%),
=5%÷105%,
≈4.76%;
女生人数比男生少4.76%;
故答案为:错误.
He had collected plenty of historical evidence, proved that humans used to have different sleeping patterns.
A.that
B.which
C.it
D.what
实施化学防制的三大支柱是()、杀虫药剂及防制方法,三者缺一不可。