皮皮学，免费搜题
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搜题
【判断题】
燃气应急预案是确保天然气供应安全、平稳的应急方案和工作机制。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Listen to the dialog and choose the best answer to each of the following questions. Which of the following statements about Xin is true?
A.
Xin cooked a lot in China though she didn ’ t need to.
B.
Xin cooks a lot in America though she may not enjoy cooking.
C.
X in likes pizza though she doesn ’ t like many other American foods.
D.
Xin often cooks in America because she misses Chinese food a lot.
【简答题】流行性腮腺炎的潜伏期为（）天。