题目内容
（请给出正确答案）
[主观题]
If you have chance to go to China, you must take some pictures of the Great Wall for it __
____ the country' s civilization.
A．symbolizes
B．sponsors
C．utters
D．pioneers
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肾综合征出血热潜伏期一般为
A.3～5天
B.1周
C.1～2周
D.2～3周
E.一个月
