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【判断题】
交通灯主干道与辅干道信号是非的关系。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】下列筛选概念表格中,选择标准如何获得?筛选过程如何进行判断?
【简答题】The plane crashed four days ago, but they're still holding out hope of finding more ________(survive).
【简答题】As we approach the 21st century，it is clearer than ever that science and technology are changging the way we live and work．The breakthroughs in bioengineering science are helping to reveal the mysteri...
【单选题】The trapped explorers weren't ______ much hope of survival before the rescue team arrived. [ ]
A.
holding back
B.
holding on
C.
holding out
D.
holding up
【简答题】BEIJING, Feb 13 — Never has China's economic growth attracted so much global attention. The shock waves from the financial cr (危机) that started in the United States have spread across the entire w...
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