搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A1/A2型题

心动周期是指（）。

A.心房收缩和舒张一次

B.心室收缩和舒张一次

C.心房或心室每舒张一次

D.心房和心室每收缩和舒张一次

E.心脏收缩一次

答案

参考答案：D

解析：1个心动周期包括心房收缩和舒张及心室收缩和舒张1次。

听力题

V．Spelling （10 points）

68. To my a____________________ (吃惊)and anger, I found her lying to me.

69.Not all the people know the importance of controlling the g_________________________(增长)of population.

70.Some students find it difficult to remember the changes of the i_______________(不规则)verbs

71.They’re planning a grand c_______________________ (庆祝活动)on Teacher’s Day.

72.He stopped his car to m________________ (确保)sure whether something had gone wrong

73. T________________  is the third day of the week.

74.It’s going to rain. You’d better take an u___________________  with you.

75.He never tells lies; he is an h___________________ boy.

76.English is her mother t______________________.

77.Don’t tie the two piles of wood together, tie them up s___________________.
查看答案
单项选择题

下列选项中，不属于劳动争议处理的一般程序的是（）。

A.协商

B.搁置

C.调解

D.诉讼
查看答案