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第8-9课

2021-6-12 14:53| 发布者: admin| 查看: 117| 评论: 0

摘要: .

第八课

Lesson 8

潜望镜的秘密

The secret of periscope

1.潜望镜很有趣，准备材料来研究吧！

Periscope is very interesting. Prepare materials for research!

2.研究潜望镜，我们能发现什么秘密？

What secrets can we discover by studying periscope?

资料卡

index card for files

潜望镜是军事上用于侦探的仪器。利用潜望镜能在隐蔽的地方清楚地看到敌人阵地的情况。

Periscope is a military instrument for detectives. The use of periscope can clearly see the enemy's position in a hidden place.

潜艇潜望镜

Submarine periscope

陆用潜望镜

Land periscope

里面有什么？

What's in it?

是 ……

It's

我们打开看看吧

Let's open it

我们的发现

Our findings

3.我们做个潜望镜。

Let's make a periscope.

我的潜望镜真棒！

My periscope is great!

我看到了 ……

I see

4.我们来设计可以看到四面八方的潜望镜吧！

Let's design a periscope that can see in all directions!

第九课

Lesson 9

神奇的“眼睛 ”

Magic eyes

1.凸透镜，凹凸镜，硬直板，纸筒，胶带纸，放大镜，显微镜等。

Convex lens, concave convex mirror, rigid plate, paper tube, adhesive tape, magnifying glass, microscope, etc.

2.我们看到了什么？

What do we see?

什么也没看到啊。

I didn't see anything.

一滴水里有这么多小生物啊，太神奇了！

There are so many small creatures in a drop of water. It's amazing!

3.随着科技的发展，人类发明了各种各样的“眼睛”。

With the development of science and technology, human beings have invented all kinds of "eyes".

生命探测仪探测废墟下的幸存者。

Life detector detects survivors under the ruins.

哈勃望远镜可以观测宇宙中遥远的星系。

The Hubble telescope can observe distant galaxies in the universe.

人类的“眼睛”还有哪些？

What else are human eyes?

电子胃镜可以检测胃的病变。

Electronic gastroscope can detect gastric lesions.

Ct扫描仪是一种功能齐全的病情探测仪器。

CT scanner is a kind of disease detection instrument with complete functions.

电子验钞机能识别钞票的真伪。

Electronic banknote detector can identify the authenticity of banknotes.

电子监测中心可以监测城市交通情况。

The electronic monitoring center can monitor urban traffic conditions.

资料卡

index card for files

电子胃镜主要由内镜，视频处理器和电视监视器三部分组。医生通过将一条装有摄像头的纤细、柔软的管子伸入胃中，可获得高清晰度的胃部图像，能直接观察到被检查部位的真实情况，有利于诊断疾病和开展各种内镜下治疗。电子胃镜有储存，摄影等功能，便于会诊及保存资料。

The electronic gastroscope is mainly composed of endoscope, video processor and TV monitor. Doctors can get high-definition stomach images by extending a thin and soft tube with camera into the stomach, and can directly observe the real situation of the inspected part, which is conducive to diagnosis of diseases and the development of endoscopic treatment. Electronic gastroscope has the functions of storage, photography, etc., which is convenient for consultation and data preservation

4.做一个望远镜。

Make a telescope.

把凸透镜和凹透镜组合在一起会怎样呢。

What happens when you combine a convex lens with a concave lens.

我看到……

I see

5.查阅资料，了解显微镜、望远镜等观察工具的发明、发展史。

Consult materials to understand the invention and development history of microscope, telescope and other observation tools.

利用显微镜和望远镜进行一些观察活动。

Use the microscope and telescope for some observation activities.

单元评价

Unit evaluation