2021年孝感科技大学英语等级考试二级考题(4)

16、Who is the only undefeated/untied heavyweight champion in pro boxing history with a 49-0 record?

A、Sonny Liston

B、Rocky Marciano

C、Floyd Patterson

D、Joe Louis

Answer：B

17、What is the atomic number for zinc?

A、14

B、18

C、26

D、30

Answer：D

18、Which of the following inventions was the first to be patented?

A、Cash Register

B、Chewing Gum

C、Dishwasher

D、Rubber Band

Answer：D

19、Which language is known as the basic building-blocks of webpages?

A、CSS

B、HTML

C、JavaScript

D、PHP

Answer：B

20、What California city did the last Pony Express ride end in?

A、Los Angeles

B、Oakland

C、Sacremento

D、San Francisco

Answer：C