到2050年，经济欠发达地区的老年人大约会增加多少人？
A. 1.66亿
B. 1.76亿
C. 1.86亿
D. 1.96亿
查看答案
I shall tell him the truth, ______.
A. no matter whether he likes it or not
B. whether he likes it or not
C. no matter he likes it or not
D. whether he would like it or not
2002年世界人口大约达到多少人？
A. 63亿
B. 66亿
C. 68亿
D. 69亿
从2002年到2050年增长的老年人数占2002年世界总人口的比例是：
A. 11%
B. 21%
C. 31%
D. 37%
This passage is mainly about______．
A. why "Good Morning to All" was replaced by "Happy Birthday to You"
B. how the song "Happy Birthday to You" was composed
C. the history of the song "Happy Birthday to You"
D. why the song "Happy Birthday to You" is popular
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