1．如图正方体ABCD−A1B1C1D1ABCD-A_{1}B_{1}C_{1}D_{1}ABCD−A1B1C1D1中，A1M→=λA1C→,λ∈[0,1]\overrightarrow{{A_1}M}=\lambda \overrightarrow{{A_1}C},\lambda \in [{0,1}]A1M=λA1C,λ∈[0,1]，则下列说法不正确的是((( )))
