在与国外客户交易磋商阶段，有（）、（）、（）、（）四个环节。（按事件发展顺序填写。）其中，（）、（）是必不可少的环节。

找出对应的英文表达：

According to the video, which event was NOT included in early track and field competitions?

A. Long-distances
B. Race walking
C. Hurdles
D. Relays

Which of the following is TRUE about relay races?___.

A. It is a team event running with the same sex.
B. A runner has four teammates in a relay race.
C. A runner can hand the baton over to his teammate before he finishes his leg.
D. Now Olympic relay has two distances: one for men, the other for women.

If a race walker’s both feet are in the air, it is called ___.

A. flying
B. lifting
C. running
D. straightening

If the runner knocks down the hurdles during the competition, he will not be penalized.

A. 对
B. 错

Middle-distance runners take a standing position when they start the competition.

A. 对
B. 错