—Would you mind _______ the answer on the blackboard, sir? We can't follow you.
—OK, I'll do it now.
A:write
B:writing
C:to write
D:wrote
短语翻译。
①与……一样____
②偶尔、间或、有时____
③8个小时的睡眠____
④担心…..____
⑤对……说“不”____
如图为“某地天气系统和地质构造示意图”.读图完成下题.
生物学家对生物进行分类的依据是( )
①性状差异
②亲缘关系
③寿命长短
④营养方式