Do you know pickleball（匹克球）？Much like tennis and Ping-pong，it's a popular new sport in the USA.
    Pickleball is easy and fun to play.It is played on a court，the size of a badminton court，with a lower net similar（類似） to that of tennis.There are two or four players in a game.Players hit a whiffle ball（塑料空心球） over the net with bats.The bats are made of wood，and they are larger than ping-pong bats.The rule of the game is that a player （or a team） first gets 11 points and also leads the other side by at least 2 points，and then he （or the team） wins the game.For example，if it's 10 to 10，one player has to make it 12 to 10 to win the game.
    The game was invented in the 1960s.Several parents were on vacation in Bainbridge Island，Washington，the US.They wanted to find an activity that their families could enjoy together.So they came up with the sport.
    No one is sure how the sport got its name.Most people believe it was called pickleball because of a dog named Pickles.He kept running after the ball when the inventors first played the sport，so everyone called it Pickles' ball.
    Kara Foster，a 60-year-old woman from New York，tried the game this year.Like many others，she fell in love with the sport and now plays it every day.
    "It helps me keep fit，" She says. "Best of all，it's much easier for me to chat with my friends while playing the sport."

（1）Which net is lower，the tennis net or the pickleball net？ （No more than 5 words）

Pickleball net.

Pickleball net.

（2）How many players are there in a game？ （No more than 7 words）

There are two or four players in a game.

There are two or four players in a game.

（3）When was the game invented？ （No more than 7 words）

The game was invented in the 1960s.

The game was invented in the 1960s.

（4）What is the best thing for Kara when she is playing pickleball？ （No more than 15 words）

To chat with?her friends while playing the sport.

To chat with?her friends while playing the sport.