In the last sentence ofthe passage, - 考试宝

单选题 In the last sentence ofthe passage, the phrase “these tools” refers to

A、 weather forecasts

B、 meteorological problems

C、 mathematics and physics

D、 economic advantages

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相关试题

单选题 You are buying from the market when you

A、borrow a book from the library

B、look after your children

C、drive to the seaside for a holiday

D、dine at a restaurant

单选题 The largest part of the light energy directed towards the earth is

A、stored up by the plants

B、absorbed by the earth's atmosphere

C、stored up by the animals in the form of body fat

D、used for electric power

单选题 Ofthe sun's total output of radiant energy, the earth receives

A、one tenth

B、one millionth

C、all that comes form the surface of the sun

D、a very small portion

单选题 All of the following acts are producing for the market EXCEPT

A、working in a bank

B、printing a book

C、attending a night school

D、growing beans for sale

单选题 Radiant energy is stored as carbon compounds by

A、plants

B、water

C、rock

D、creatures

单选题 Which of the following,would be the best title for the passage?

A、Selling and Buying.

B、What Is the Market?

C、Everything You Do is Producing for the Market.

D、What Can the Market Do for You?

单选题 The sun is the source of all of the following EXCEPT

A、Gasoline

B、natural gas

C、atomic power

D、animal fat

单选题 The sun's energy provides us with all EXCEPT

A、rain

B、coal

C、water

D、Light