生物发生律
参考答案:
又称重演律,是指动物的个体发育是系统发育简短而迅速的重演。由德国学者Haechkel提出的,对于研究动物的起源与系统演化有重要意义。
用所给词的适当形式填空:
1.September is the ________ (nine) month of a year.
2.Your English is getting better, but there is still room for ________ (improve).
3.Don't judge a person by ________ (appear).
4.As last, the farmers got in the crops before the rain. (succeed)
5.Last summer we went to England and the exciting holiday there was quite (forget ).
6.He made the most mistakes of all the students in the exam because of his (careful).
7.She dropped the old vase _________ (accident) and broke it into pieces.
8.He was one of the best _________ (contest) in the competition although he was unprepared.
9.I regret (lose) my expensive cellphone last week.
10.A _________ (balance) diet and plenty of exercise will help your hair shine.
在肾气丸和右归丸中均用的药物是()。
A.泽泻、丹皮
B.桂枝、熟地黄
C.山茱萸、附子
D.山药、枸杞子
E.茯苓、当归