在农业生产上,播种前应当先测定种子的____ ,采用____ 的方法进行.
如图表示植物进化的大致过程,图中①、②、③依次代表( )
A. Have you got an email from Tom?
B. What did your mother have for lunch?
C. Does Lingling like hamburgers?
D. He says sandwiches are delicious.
E. I had eggs and milk.
关于汽车所涉及的物理问题,下列说法错误的是( )