问题
单项选择题
视网膜劈裂症最常出现的部位是( )
A．鼻上象限
B．鼻下象限
C．颞上象限
D．颞下象限
E．黄斑区
答案
参考答案：D
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视网膜劈裂症最常出现的部位是( )
A．鼻上象限
B．鼻下象限
C．颞上象限
D．颞下象限
E．黄斑区
参考答案：D
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| As we all know, weather changes are different from other world problems. 1 It goes wherever it wants to go. Floods, strong winds, droughts, earthquakes, and things like that show us what a change in climate could bring upon us. 2 They may hurt people who live where they happen. If all countries work together to learn about the danger of nature, we can make it less dangerous and less expensive by helping each other. Luckily, in 1873, the MIO( 国际气象组织) was founded. 3 Our country joined it in 1972. World Meteorological Day (世界气象日) is celebrated each year on March 23rd. 4 Because it can change the weather. All of the countries around the world are trying their best to protect the environment. 5 People know that if we don't protect our environment or pay any attention to the changes in the weather and climate, bad things will happen.
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