Acids soften foods that have lots of proteins. Lime juice is an acid that breaks down the protein in fish. The lime juice's effect on the fish proteins gives the dish an appealing mouth texture and an opaque appearance that resembles
cooking with heat. Tough cuts of meat often are soaked in marinades made with vinegar, lemon juice, tomato juice or other types of acids to soften them
and add flavor. Marinades don't enter deeply into meat so in order for the spices to enter, acidic foods are added to open up the outer

When learning a language, antonyms help us learn vocabulary words. Match these words with their antonyms.

A big part of learning a second language is learning about the culture of that language. This week we will take a look at a famous literary character from British culture.
Who is Sherlock Holmes?
Sherlock Holmes is a character from books written by Sir Arthur Conan Doyle.
Holmes became an icon of British culture and modern detective stories. Doyle introduced Holmes in 1887 in the short story “A Study in Scarlet” and went on to write at least 50 more stories featuring the detective, as well as The Hound of
the Baskervilles (1902) and several other novels. Doyle based his character on the personality of his former teacher in medical school, Dr. Joseph Bell of Edinburgh.
Sherlock Holmes is a detective who tries to find out who committed the crimes.
There is a monument in London dedicated to him. He has a sharp mind and solves
even the most difficult and strange mysteries. He works with his friend Dr Watson, a retired army officer. Sherlock Holmes is often dressed in a coat and cap, and carrying
a pipe and a magnifying glass. He lives at 221B Baker Street in London. Holmes’s opponent is the criminal mastermind Professor Moriarty.
- 

The Hubble Space Telescope is a large telescope in space. NASA launched Hubble in 1990. Hubble is as long as a large school bus. It weighs as much as two adult elephants. Hubble travels around Earth at about 5 miles per second.
That is as fast as driving a car from the East Coast of the United States to the West Coast in 10 minutes. The distance between the two coasts is 4,800 km, which is similar to driving from Amman to Aqaba and back 14 times!
Hubble faces toward space. It takes pictures of planets, stars and galaxies. Hubble has seen stars being born.
Hubble has seen stars die. It has seen galaxies that are trillions of miles away. Hubble also has seen comet pieces crash into the gases above Jupiter.
Scientists have learned a lot about space from Hubble pictures. The pictures are beautiful to look at too