问题
单项选择题 B型题
慢速腭中缝扩展需要多长时间可以逐渐使腭中缝扩开,达到与快速扩展同样的效果()
A.2~3周
B.10~12周
C.3~5个月
D.6~12个月
E.12~24个月
答案
参考答案:B
慢速腭中缝扩展需要多长时间可以逐渐使腭中缝扩开,达到与快速扩展同样的效果()
A.2~3周
B.10~12周
C.3~5个月
D.6~12个月
E.12~24个月
参考答案:B
完形填空。 | ||||
Paris has a beautiful name, the City of 1 . Do you know 2 it means? Many beautiful buildings are lighted at 3 . The streets are very 4 . When you 5 in Paris, you must not turn 6 you headlights (汽车前 灯) even after dark. Paris is full of life all day and all night. But this is not the 7 reason for its beautiful name. For hundreds of years, Paris has been the centre of science and art. 8 scientists and artists have come to 9 here. For this reason also, people 10 it the City of Lights. | ||||
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