我国近代史上最早有计划地深入民间、实地调查和采集民歌，而且用其素材进行创作的作曲家是

---- What did you think of her speech?

--- She _______ for one hour but didn’t _______ much.

A．spoke,speak

B．spoke, say

C．said, speak

D．said, say

患者心悸，善惊易恐，坐卧不安，多梦易醒，舌苔薄白，脉虚数。其证候是（）.

A.心脾两虚

B.阴虚火旺

C.心虚胆怯

D.心血不足

E.水饮凌心

       科技创新有力推动了人类文明的演进，对社会生产、生活产生了深刻的影响。结合所学知识，探究、解答下列问题：

       观察下图回答：

（1）①图1、2所示的成果各是什么？分别指出它们的发明者。

                                                                                                                                                                        ②图1所示成果的发明和使用把人类带进了什么时代？图2所示成果的出现是人类进入什么时代的表     现？                                                                                                                                                               （2）科技的创新和进步扩大了人们的活动范围，增强了人与人之间的交流，使世界逐渐发展成为一个密    不可分的整体。请分别从三次科技革命中各举一项有利于“整体世界形成”的成果。                                                                                                                                                                                                                                                                                                                               （3）有人说，“科技是把双刃剑”。结合所学知识，谈谈你对这一看法的认识。                                                                                                                                                                                                                                                                                                                             

检验站的作用是通过对产品的检测，履行产品检验和监督的职能，______。

A．严格把关

B．防止不合格品流入下一作业过程或交付

C．实施保证职能

D．预防不合格发生

灌装200L油桶的时间应符合下列规定（）。

A、甲、乙、丙A类油品宜为1min

B、甲、乙、丙A类油品宜为2min

C、润滑油宜为3min

D、灌油枪出口流速不得大于4.5m/s