Every day scientists test new car-engine designs and experiment with new types of fuel.
simple
100
**Marco Polo was an Italian explorer** who traveled to China and lived there for seventeen years during the thirteenth century.
main clause
100
How incredible it is that people know so little about the elements that make up their world!
exclamatory
100
Greenland named by the Viking explorer Eric the Red.
Greenland WAS named by...
200
Gasoline is a fuel that is steadily becoming more expensive and must be replaced.
complex
200
**Because Polo's writings were widely read,** they had a great impact on Europeans.
Adverb Clause
200
Do you know how the periodic table is organized?
interrogative
200
"Whiteland" seems a more fitting name, most of the island is covered with ice and snow.
Comma Splice.... "Whiteland" seems a more fitting name, SINCE most of the island....
300
When petroleum manufacturers experienced difficulty meeting gasoline demand in the early 1970s, the government allowed increased oil imports, and it encouraged refiners to increase their capacity.
compound-complex
300
His journals paved the way for the arrival of thousands of Europeans, **who poured into China in later centuries.**
nonessential adjective clause
300
The elements are arranged in the periodic table according to their atomic numbers.
declarative
300
Perhaps Eric first saw Greenland in midsummer, it was really green.
Perhaps Eric first saw Greenland in midsummer WHEN it was really green.
400
In the 1970s, some manufacturers began to market a fuel mixture called gasohol, which consists of 90 percent unleaded gasoline and 10 percent ethyl alcohol.
complex
400
**That such an advanced society existed at the same time as theirs** was difficult for the Europeans to believe.
Noun clause
400
Learn to understand how the elements are arranged in the periodic table.
imperative
400
When Eric founded settlements in Greenland, which may have lasted for 500 years.
Eric founded settlements in Greenland THAT may have lasted for 500 years.
500
Gasohol is used chiefly in automobile and truck engines, and, in most cases, the fuel provides the same engine performance and mileage as gasoline.
compound
500
The first large group of Europeans in China consisted of the traders **who sailed into Canton (Guangzhou) harbor in 1517 from Portugal.**
essential adjective clause
500
As the table shows, elements of similar properties occur at certain periodic intervals.
declarative
500
Eric's son Leif, who explored part of North America, which Norse lore refers to as Vinland.
Eric's son Leif explored part of North America, which Norse lore refers to as Vinland.