题目

What effect do the mountains have on winds?()

A

Make them dry.

B

Make them wet.

C

Make them cool.

D

 Make them weak.

考点:阅读选择

事实细节题。根据第四段第二句“ As they( the winds from the pacific) rise to cross the mountains, the winds are cooled.…”。

多做几道

Why does the author mention electric eels?

A

To warn the reader to stay away from them

B

To compare their voltage to that used in houses

C

To give an example of a living electrical generator

D

To describe a new source of electrical power

How many volts of electricity can an electric eel emit?

A

800

B

600

C

200

D

120

It can be inferred from the passage that the longer an eel is the

A

more beneficial it will be to science

B

more powerful its electrical charge will be

C

easier it will be to find

D

tougher it will be to eat

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

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