閱讀有三類題型，選詞填空、段落匹配和仔細(xì)閱讀。選詞填空是簡(jiǎn)單的題，只要單詞都認(rèn)識(shí)，出錯(cuò)的幾率是很小的。段落匹配又叫長(zhǎng)篇閱讀，篇幅長(zhǎng)，做起來比較費(fèi)勁，但是此題有很多的技巧，仔細(xì)閱讀把文章讀懂，就不會(huì)悲劇。今天為大家分享2020年6月大學(xué)英語六級(jí)閱讀理解練習(xí)題25，希望對(duì)您有所幫助。

Steel is valued for its reliability, but not when it gets cold. Most forms of steel __26__ become brittle (脆的)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 (用魚雷攻擊)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__ in 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.

A)abruptly

B)additives

C)approach

D)ardently

E)besieged

F)channel

G)comparable

H)components

I)cracked

J)fractures

K)hollow

L)relevant

M)reshuffled

N)strived

O)violent

(26)A

(27)J

(28)B

(29)E

(30)I

(31)N

(32)C

(33)G

英語老師希望以上關(guān)于六級(jí)閱讀的分享能夠真正幫助到正在復(fù)習(xí)備考的同學(xué)們。在復(fù)習(xí)過程中遇到問題是不可避免的，但是同學(xué)們一定要保持好心態(tài)，堅(jiān)持不懈，相信一定會(huì)取得優(yōu)異的成績(jī)!

更多內(nèi)容點(diǎn)擊：

2020年上半年大學(xué)英語六級(jí)閱讀理解匯總

【責(zé)任編輯：lyt】