國中英語基測出現過 if 的考題。

Watch out for computer viruses!

Computer viruses are unfriendly programs that cause problems if you download them into your computer. There are things that you can do to keep your computer virus free. One is to never open any email from a stranger. Another is to only download programs from places you know are safe.

virus 病毒
cause 導致
download 下載
1.
Why are computer viruses bad?
They can make your computer stop working.
They can make you afraid of strangers.
They can make your computer scared.
They can make you sick.
2.
What does places mean in the last sentence?
Internet cafe 網咖
Internet site 網站
Libraries.
Internet cafes.
Internet sites.
Computer classes.