In the middle school chemistry teaching should choose the appropriate demonstration experiment, according to the concrete course content and the teaching goal, the appropriate readjustment carries on the demonstration experiment the order, and the attention beforehand completes the full preparatory work, the guarantee demonstration experiment security, demonstrativeness, the visibility and the creativity.

中學(xué)化學(xué)教學(xué)中應(yīng)選擇合適的演示實(shí)驗(yàn)，根據(jù)具體的教學(xué)內(nèi)容和教學(xué)目的亚洲激情小说，適當(dāng)調(diào)整進(jìn)行演示實(shí)驗(yàn)的順序，并注意事先做好充分的準(zhǔn)備工作，保證演示實(shí)驗(yàn)的安全性A片网站免费在线播放、示范性、可見度和創(chuàng)造性啊～好痛别进去了啊视频。

To study or complete a course of study at a preparatory school.

在預(yù)科學(xué)校學(xué)習(xí)：學(xué)習(xí)或完成預(yù)科學(xué)校的課程无码专区第一页中文字幕第一张。

Right now I am teaching the IELTS preparatory course, in addition to the general English courses.

現(xiàn)在我所教授的是雅思預(yù)備級(jí)課程和實(shí)用英語課程。

prequalification experience：取得資格前的工作經(jīng)驗(yàn)

preparatory supervisory course 督導(dǎo)預(yù)修課程 | prequalification experience 取得資格前的工作經(jīng)驗(yàn) | prequalified tender 預(yù)審的標(biāo)書