2019年6月大學(xué)英語六級(jí)考試真題完整版（第三套）

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2019年6月大學(xué)英語六級(jí)考試真題（三）

PartⅠwriting （30minutes）

Directions： For this part, you are allowed 30 minutes to write an essay on the importance of motivation and methods in learning. You can cite examples to illustrate your views. You should write at least 150 words but no more than 200 words.

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Part Ⅱ Listening Comprehension （30 minutes）

說明：2019年6月六級(jí)考試全國共考了2套聽力，本套真題聽力與前2套內(nèi)容完全-樣，只是順序不一樣。

Part Ⅲ Reading Comprehension （40 minutes）

Section A

Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.

Steel is valued for its reliability, but not when it gets cold. Most forms of steel 26____become britle  at temperatures below about -25 unless they are mixed with other metals. Now, though, a novel type of steel has been developed that resists 27____at much lower temperatures, while retaining its strength and toughness-without the need for expensive 28____.

Steel's fragility at low temperatures first became a major concern during the Second World War. After

German U-boats torpedoed  numerous British ships, a 2,700-strong fleet of cheap-and-cheerful"Liberty ships"was introduced to replace the lost vessels, providing a lifeline for the 29____British. But the steel shells of hundreds of the ships 30____jin the icy north Atlantic, and 12 broke in half and sank.

Brittleness remains a problem when building steel structures in cold conditions, such as oil rigs in the Arctic.So scientists have 31____to find a solution by mixing it with expensive metals such as nickel.

Yuuji Kimura and colleagues in Japan tried a more physical 32____.Rather than adding other metals,they developed a complex mechanical process involving repeated heating and very severe mechanical deformation,known as tempforming.

The resulting steel appears to achieve a combination of strength and toughness that is 33____to that of modem steels that are very rich in alloy content and, therefore,very expensive.

Kimura's team intends to use its tempformed steel to make ultra-high strength parts, such as bolts. They hope to reduce both the number of 34____needed in a construction job and their weight- by replacing solid supports with 35____tubes, for example. This could reduce the amount of steel needed to make everything from automobiles to buildings and bridges.