0410语法34 39 40 求助

jackloveUID: 183611

34 After the United States became independent, the cure of more fertile drew steadily New Englanders into the Ohio Vally and the British colony of Upper Canada.

39 By 1810 the 23 towns of Hampshire county, Massachusetts, had reached a remarkable uniform of economic development as well as population density.

40 With more than the world's annual yield of 50 million tons of soy beans, an improtant source of protein, is grown in the United States.

C D A
不知为什么？

hotkenUID: 2135671

34 改为steadily drew
39 不是选D,是选C,uniformity
40 把with去掉

jackloveUID: 183611

yield 不用写成yields吗？ why？

副词修饰动词  adv + V  知道了

39  很多人说 as well as  -----〉 and   楼上的认为呢/