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初一教案 第713期
发布时间:2020-10-19

8/713期初一教案

作者:高荣华

Better way to test (P3)

Warm up

What is happening in the picture?

Can we do anything to make water safer?

 

Pre-reading

What is the girl doing in the picture?

 

What did she do to win the title of national top young scientist?

头衔,称号

 

She invented a device (装置) that detects lead in drinking water.

 

While reading

Choose the answer:

1. Gitanjali’s device can help us _____.

A. test water for lead

B. improve food safety

C. make better use of lead

D. recycle water

A

2. How does the device work?

A. It cleans water with carbon.

B. It makes more clean water.

C. Its atoms send messages to the user’s smartphone.

D. It has a sensor that reacts with lead.

D

3. What caused the 2014 Flint water crisis?

A. The city’s pipes were broken.

B. Someone put toxins into the city’s drinking water.

C. Lead from old pipes polluted the city’s drinking water.

D. Too many people were born that year.

C

4. What makes the device better than test strips?

A. It can be used by anyone.

B. It can clean drinking water.

C. It is cheaper and easier to use.

D. It can get results faster.

D

 

Words in use

Complete the sentences with the correct form of the words in the box.

change       test     special     send    result  

1. Did you ______ a birthday card to Susan?

2. The teacher is ______ the students on their French.

3. In autumn, the leaves ______ from green to brown.  

4. The players took a_____ train to get to the match.

5. When will you get your exam _____?

1. send    2. testing   3. change   4. special   5. results

 

Post reading

What do you think of Gitanjali Rao?

What can we learn from her?

 

More than one moon (P6)

Warm up

How many moons does Earth have?

Do you think it is possible to have more than one moon?

Why or why not?

 

Pre-reading

What is a mini-moon also called?

It is also called a Temporarily Captured Object (暂时捕获的天体), or TCO.

Does Earth often have mini-moons? 

 

While reading

Choose the answer:

1.  From the second paragraph, we know that _____.

A. Earth has many mini-moons

B. mini-moons stay in Earth’s orbit forever

C. mini-moons will leave Earth

D. mini-moons can change Earth’s orbit

C

2. What do we know about 2020 SO?

A. It might come from the moon.

B. It has orbited Earth for over 50 years.

C. It will enter our orbit in May 2021.

D. Scientists are not sure what it is.

D

3. How long might 2020 CD3 stay in Earth’s orbit?

A. For 54 years.

B. For one month.

C. For one year.

D. For two years.

B


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