Questions 7-13. Read the text carefully then choose the correct answer.

No More Worries about Acne

Worried about ache? Are you worried about the side effects of using drugs to cure acne? You should be. They are toxic and have side effects. They may cause burns or red skin. Soon we may have a new drug to treat it safely.

A medical student at the University of California San Diego invented a new way to cure acne. It treats acne effectively and keeps your skin clean. The new technique uses nano-bomb technology and natural ingredients. These ingredients are from coconut oil, palm oil, human milk, cow's milk, and goat's milk. These nano-bombs find the bacteria causing acne then they attack and kill the bacteria.

Robots with the Sense of Touch

Guess what? We will soon have robots with the sense of touch. We already have smart robots that can dance, smile, and teach different subjects. But now scientists are developing robots with skin that can sense. These new robots will have skin on their fingers made from thin pieces of rubber. The skin will help robots sense because it will be very much like human skin. Scientists said that these robots would be able to sense pressure and temperature.

The robots can sense by using their ______.