We know that he’s from Australia, but_________ is that he’s a popular architect in Australia.
A. that we don’t know
B. what we don’t know
C. unknown
D. what unknown
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It is not who is right but what is right_________ is of importance.
A. which
B. it
C. that
D. this
Not until 1998_________ return to his hometown.
A. did he
B. he did
C. he does
D. does he
1.根据第七次全国人口普查数据显示,全国人口共( )人。
A. 14.1178亿
B. 15.1178亿
C. 16.1178亿
D. 17.1178亿
2.未来十几年特别是2021—2030年,我国人口发展进入( )。
A. 关键转折期
B. 战略机遇期
C. 人口膨胀期
D. 人口衰退期