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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】下列是一组有规律的图案，第1个图案由4个基础图形组成，第2个图案由7个基础图形组成，第3个图形由10个基础图形组成，第5个图形中基础图形的个数为（ ）
A.
13
B.
14
C.
15
D.
16
【单选题】Passage2Questions 21 to 25 are based on the following passage:People travel for a lot of reasons. Some tourists go to see battlefields or religious shrines. Others are looking for culture, or simply w...
A.
they want to see historic remains or religious spots.
B.
they are interested in different cultural traditions and social customs.
C.
they would like to take pictures in front of famous sites.
D.
they wish to escape from the cold, dark and rainy days back at home.
【单选题】由麦哲伦发起的这次环球探险，历时1081天，航行约85700千米，发现了沟通两大洋的海峡，征服了太平洋、印度洋和大西洋，从根本上改变了过去人们对地球的认识，大大丰富了人们的海洋地理知识，船队返航的时间是哪一年？（）
A.
1520
B.
1521
C.
1522
D.
1523