Question

1.He was only in ----at the time?

Answer 1

在某某年代（这十年里）：

in the 1980s

in one's XXs是固定词组,意思是在一个人多大的时候.

那个时候他才20多岁吗?

选A.

percent

百分之一[C]

Thirty percent of the farmland has been planted to oil crops.

百分之三十的农田已种上油料作物.

Over ninety percent of the islanders here are illiterate.

这儿的岛民,百分之九十以上都是文盲.

选C.