题目

 --Who is the girl ______ long hair and big eyes? -- Oh, it’s our new classmate, Betty. A. at        B. with         C. have     D. by 答案：B如图所示是一种水翼船，船体下安装了水翼．当船在高速航行时，水面下的水翼会使船身整体抬高离开水面，从而减小水对船的阻力．则水翼安装正确的是（   ）A.               B. C.             D.