题目
材料全屏
11

【单选】

All of the following are mentioned as factors that encourage fossilization except the _____

A

speed of burying

B

conditions of the water

C

rate at which soft tissues decay

D

cause of death of the animal

考点:阅读选择

第一段中间部分提到了 their fossilization required a suite of factors:软组织的腐烂速度缓慢;很少被其他动物残食;缺少混杂冲走小骨头的快速水流和波浪;以及相当快地被掩埋。因此只有D选项,也就是动物的死因没有被提及。

多做几道

材料全屏
11

【单选】

What does the passage mainly discuss?()

A

The historical development of the piano

B

The quality of tone produced by various keyboard instruments

C

The uses of keyboard instruments in various types of compositions

D

The popularity of the piano with composers

Which of the following instruments was widely used before the seventeenth century?()

A

The harpsichord

B

The spinet

C

The clavichord

D

The organ

The word"supplanted"in paragraph 2 is closest in meaning to()

A

supported

B

 promoted

C

replace

D

dominated

According to the passage, what deficiency did the harpsichord have?()

A

 It was fragile

B

 It lacked variety in tone

C

 It sounded metallic

D

 It could not produce a strong sound

According to the information in the third paragraph, which of the following improvements made it possible to lengthen the tone produced by the piano?()

A

The introduction of pedals

B

The use of heavy wires

C

The use of felt-padded hammerheads

D

The metal frame construction

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