染色体主要是由____和____组成的,其中____是主要的遗传物质。
⑴Where is the school? ____ A. I read books.
⑵How tall is your mom?____ B. He's a postman.
⑶What did you do last Monday?____ C. It's next to the library.
⑷What does your uncle do?____ D. 1. 65 meters.
⑸Do you like watching TV?____ E. Yes,I do.