When are you going?

如图，A，B两点被池塘隔开，在AB外选一点C，连接AC和BC，并分别找出它们的中点M，N．若测得MN=15m，则A，B两点间的距离为（　　）m．

⑴____ A. red            B. then       C. ticket      D. spend

⑵____ A. maths       B. thank      C. think      D. there

⑶____ A. weather    B. bread      C. tea         D. breakfast

⑷____ A. toy            B. boy         C. goat       D.coin

⑸____ A. find           B. film         C. five        D. climb

①花粉；②胚珠；③花冠；④花柄；⑤花萼；⑥传粉；⑦受精；⑧开花；⑨卵细胞；⑩精子．