A:血管、心脏
B:体循环和肺循环
C:血液、血管、心脏病
D:体循环、心脏、肺循环
化学与生活生产息息相关,请运用化学知识回答以下问题
(1)目前市场上有:高钙奶粉、补锌口服液等,人体缺铁可能会引起____ ;
(2)在农业生产中,施用的硝酸钾(KNO3)属于____ 肥料;
(3)当森林发生火灾时,救火的措施之一是将大火蔓延线路前的一片树木砍掉,形成隔离带,其原理是____ .
下列形近字组词错误的一项是( )
End of Term Report
Student's name
Zhang Xing
Subject
English
Teacher
Mr. Dickens
At the beginning of this term
He found that studying English was very ____
In writing
His ____is better.
In speaking
He can have English ____with his friends and with me.
He can answer my questions in English____.
Next term
If he ____like this, he will do much better.
---Are you going to Tom's birthday party?---_____. I might have to work.