1 throughout history___ different representations for numbers and for the basic process of counting.
A have been many
B there have been many
C many
D when many
括号里的是改错中的项~
2 (while) models of automobiles date (back) as far as the late 1600's,the 1880's (seen)the first commercial (interest) in the vehicle.
3 when (study) different cultures and societies, anthropologists often (focus on) marriage as (a) contractual agreement between (different parties).
4 primitive humans probably did not (deliberately cook) food until (long) after they had learned (to use) fire for light and (warm).
5 The "method", (which is) both a style of (acting a) system of training for the actor,stresses (inner) motivation and psychological (truth).
谢谢各位的帮忙~~   |