题目

Johnny is a great dancer;he                  above the rest for his perfect performance. A.stand by B.stands out C.lives on D.makes out 答案:B 解析: 句意为“约翰是伟大的舞蹈家,他因为出众的表演而很突出”,选项中,stand out有“突出”之意。已知函数f(x)=sin(x+),g(x)=cosx(x-),设h(x)=f(x)g(x),则下列说法不正确的是A.x∈R,f(x+)=g(x)B.x∈R,C.x∈R,h(-x)=h(x)D.x∈R,h(x+π)=h(x)
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