Ⅰ. Listen and circle（Shenshen 编写了一首使用电脑的儿歌。听一听，圈出句子中包含 "/k/" 发音的单词）
Single-click the mouse to select.
Double-click the mouse to open.
Dick quickly clicks the mouse.
Suddenly the screen goes black.
Dick checks the system of the computer.
Luckily, the desktop（桌面）comes back.

QUICK TIPS
鼠标的妙用：
左键点选任务灵，右键呼出菜单藏。
滚轮上下翻页畅，拖拽对象任遨游！

Single-click the mouse to select.
Double-click the mouse to open.
Dick quickly clicks the mouse.
Suddenly the screen goes black.
Dick checks the system of the computer.
Luckily, the desktop comes back.

Ⅱ. Listen and write（Xiaojiang 查阅了关于使用电脑的信息，并把它们记在了本子上。听录音，补全句子）
1. A computer can help us problems.
2. the right button of the mouse to open the menu.
3. A messy desktop slows down your computer. unused files.
4. Never use your birth date or name as a .
5. Don’t eat or drink near your .

1. solve
2. Click
3. Delete
4. password
5. laptop

Ⅲ. Listen and write（同学们正在讨论电脑的过去、现在和未来。听录音，补全时间轴上的信息）
in 1946
the first computer
as big as
as heavy as four elephants
in 2018
super small computers
sand
nowadays (如今)
modern computers
a notebook
the microchips (微芯片) are as tiny as an ant’s eye
in the future
smart computers
as thin as a piece of paper
human brains (人脑)

in 1946
the first computer
* as big as a room
* as heavy as four elephants
in 2018
super small computers
* as small as sand
nowadays
modern computers
* as light as a notebook
* the microchips are as tiny as an ant’s eye
in the future
smart computers
* as thin as a piece of paper
* as smart as human brains

Ⅳ. Listen and judge（Xiaopu 根据爸爸和他的谈话内容写了一篇关于电脑发展史的短文。听录音，判断下列句子是否正确，正确的用T表示，不正确的用F表示）
() 1. ENIAC was smaller than modern laptops.
() 2. Early computers had no keyboard or mouse.
() 3. All computers today are as heavy as elephants.
() 4. Using your birth date as a password is a good idea.

1. F 2. T 3. F 4. F