和静脉血相比，动脉血（ ）
A：颜色鲜红，含二氧化碳较多
B：颜色鲜红，含氧较多
C：颜色暗红，含二氧化碳较多
D：颜色暗红，含氧较多
写出下列词语的近义词。
舒展-____ 美丽-____ 轻盈-____
English is very____ (interest). I like it very much.
将左边和右边的句子连成对话。
①Is this your bed? ____ a. Hi, Joe.
②Are these your pens? ____ b. No, it isn't.
③Your book is nice. ____ c. Thank you.
④Hi, Peter. ____ d. Six yuan, please.
⑤How much are they? ____ e. Yes, they are.
