燃气涡轮发动机使用合成滑油，应避免长时间与（）接触.A.金属材料 B.皮肤 C.铝合

Miss Wu is a young teacher of English in China. She loves teaching very much. One day when she was giving an English lesson, she found the headmaster sitting at the back of the classroom. After class, the headmaster told her that he came to her class to find out how much English and how much Chinese she was using. The result was about half English and half Chinese. She was using Chinese when she gave instructions to her students and when she wanted to get feedback (反馈） from her students. The headmaster told her that she should use more English in her class.

Miss Wu made a plan like this:

·talk with an Englishman every Sunday for two hours to learn more English expressions;

·write some English expressions on cards. These cards not only remind her to use English in class, but also help her remember some expressions;

·have a five-minute talk in English with students before class.

She used body language to help her if students could not understand.

One year later, she found she could use English freely in class.

小题1: Miss Wu ______.

A．has a poor memory

B．is a teacher of Chinese

C．loves her job

D．is angry with the headmaster小题2: The headmaster came to Miss Wu’s class to ______.

A．write some English expressions on cards

B．help her improve her English teaching

C．give instructions to the students

D．get feedback from the students小题3:After the headmaster left, Miss Wu realized that she should _____ in her class.

A．use more Chinese

B．use more English

C．use half English and half Chinese

D．use body language小题4: What is the main idea of this passage?

A．Use cards in English teaching

B．Talk with English-speaking people

C．Speak more English in English class

D．Learn more English expressions

患者，女性，56岁。素有"脑供血不足"史。近来神情呆滞，沉默寡语，记忆力很差，词不达意，纳差，嗜卧，腰膝酸软，舌瘦色淡，苔薄白，脉沉细弱。前医诊断"痴呆"，气血两虚型，予补中益气汤，疗效欠佳。

其治法为（）

A.补肾益髓

B.补益心气

C.豁痰开窍

D.化瘀通络

E.补肾健脾

关于抢劫应急预案的表述，正确的是（）。

A．当不法分子在网点实施抢劫时，营业网点应立即向110报警，同时向上级行服务突发事件应急处理办公室报告事件情况。

B．保安人员迅速疏散客户，如客户受到伤害，网点人员应积极对受伤客户迅速实行救助。

C．将现金、凭证和账簿转移到安全地方。

D．犯罪分子作案未遂逃跑，有关人员保护好现场及监控录像，如实向公安部门提供有关隋况。

E．经上级行服务突发事件应急处理领导小组研究后。做好客户和媒体的公告工作。

造成黄土高原地区水土流失严重的人为原因有（　　）

A．地表光秃，植被稀少

B．黄土结构疏松．多垂直裂隙

C．降水集中于7、8月份

D．人们不合理的活动，使地表疏松和植被遭受破坏

何谓掺杂？