While working in South Africa, Ken Banks saw that many of these communities did not have1., so communication was a challenge. However, Banks noticed that many villages had2..Banks created 3.called Frontline SMS, which was installed on a computer, which was then connected to a cell phone, allowing people to communicate through4.Today, Frontline SMS is used worldwide. According to Banks, 5.is to take your idea and make it reality.

傅立叶级数及变换对数学这门学科的发展产生了深刻的影响，并在物理学、数论、组合数学、（）处理、概率、统计、密码学、声学、光学等科学及工程领域一直具有广泛的应用并且仍然继续具有很大的应用价值，其中应用于（）、（）改变我们的生活。

傅立（里）叶（Jean Baptiste Joseph Fourier,）（1768-1830）是（）国数学家、物理家，

傅里叶变换的基本思想首先由（）提出，所以以其名字来命名以示纪念。从现代数学的眼光来看，傅里叶变换是一种特殊的积分变换。它能将满足一定条件的某个函数表示成（）基函数的线性组合或者积分

New Balance athletic shoe lines use ________ for the different shoe designs.

A. a numbering system
B. a running system
C. a measuring system
D. a naming system

What does the New Balance company do to promote its idea?

A. Sponsor sports superstars to play in matches.
B. Design more varieties of shoes to meet customers' needs.
C. Expand its manufacturing factories around the world.
D. Sponsor sports events or organizations to develop athletes.

The SL­2 model is designed for those who have ________.

A. larger heels
B. high arch feet
C. low arch feet
D. lower insteps

The purpose of the passage is to ________.

A. describe the idea of the New Balance company
B. explain why New Balance shoes are so popular
C. give a brief introduction to the New Balance company
D. introduce some types of New Balance shoes