1、The [firstly ]naval battle of the Revolutionary War was[ fought off] the coast of Machias, Maine [in] June 1775.
2、___ that distinguish human beings from mother primates are related to the ability of people to stand upright and walk on two legs. (A) Many of the physical characteristics (B) Of the many physical characteristics (C) The physical characteristics (D) There are many physical characteristics
are related to 是谓语,前面显然是名词做主语,且that distinguish human beings from mother primates 是主语的定语从句,那么只有A和C了,A和C语法上都是正确的,C名词做主语,后面接定语从句.选择A是从意思上的角度,many of the physical characteristics而不是(all of)the physical characteristics更客观一点