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问题
单项选择题
幼儿开始做立出现的脊柱弯曲是()。
A.颈曲
B.胸曲
C.腰曲
D.骶曲
答案
参考答案:C
单项选择题
破伤风最先出现的症状是
A.苦笑面容
B.颈项强直
C.张口困难
D.角弓反张
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选择题
—Why,I didn’t get you on the phone.
—We ________football on the playground when you phoned.
A.must be playing
B.must play
C.must have played
D.must have been playing
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