1942年12月2日，以物理学家（）为首的一批科学家在美国芝加哥建成了世界第一座核反
题型：填空题
问题：
1942年12月2日，以物理学家（）为首的一批科学家在美国芝加哥建成了世界第一座核反应堆，实现了可控的核自持链式裂变反应。
题型：填空题
| 完形填空。 "I don't have to go to school. My school __1__ me!" Sara showed me her room. "This is my classroom and this is my teacher and the other __2_ " She pointed to a large radio with a microphone. Sara lives with her parents on a farm in Central Australia. It's about 60 miles from her farm to her neighbors. She can't go to __3__ because her farm is so far away from __4__. There are a lot of children like her in Australia. The  y use the "School of the Air". There are 12 of __5__ for children in the outback(内地) of Australia. They are at these schools until they are about 12 years old. Sara said, "We talk to our teachers every day on the __6__. And our __7__ last about 30 minutes. Our teachers __8__ us the class work and we do it before our lessons. Twice a year our teacher__9__ us, and once a year all the students _10__. That's the best time of the year. " | ||||
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