【判断题】“没有传感器就没有现代科学技术”的表述是错误的。
【单选题】Most of the time ,no one will care about natural disasters, and they won ’ t avoiding disasters till one has really struck.
【单选题】Some students even have no idea of they are studying, so they are aimless most of the time.
【简答题】Most of the time, no one will care about natural disasters, and they won’t avoiding disasters till one has really struck.