听短文，判断正误，正确的写“T”，错误的写“F"。
⑴____My parents and I go to Canada by plane．
⑵____I buy some presents for my friends．
⑶____I have a nice winter holiday．
⑷____We visit the zoo in Canada．
⑸____I like the sea and like swimming，too．
⑹____We have a good time in China．
的直线
经过圆
的圆心，则直线