如图，平面直角坐标系中，⊙O半径长为1.点⊙P（a,0），⊙P的半径长为2，把⊙P向左平移，当⊙P与⊙O相切时，a的值为
( )It's ______apple. A. a B. an C. the
找出不同类的单词。 ( )（1）A. appleB. pearC. egg ( )（2）A.aB. theC. an ( )（3）A.thisB. that C. your ( )（4）A. carrots B. cucumbersC. banana ( )（5）A. eggplant B. lemonC. orange
给下列问句选择正确的答语 ( )What’s your number ? ( )What’s your name? ( )Which class are you in ? ( )What’s the time? ( )What’s ten and seven?
E. It’s seventeen.
( )Have _______milk. A. some B. many C. a
( )Let’s count _____one ______seventeen. A. from , to B. to, fromC. with , to
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