赞题库-背景图
单项选择题

Questions 23 to 25 are based on the passage you have just heard.

A．Solar technologies are not mature enough now.
B．Solar energy has been the most important part of energy supply.
C．People must wait a long time before solar energy become usable.
D．Only a few countries can use solar energy.
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热门试题

单项选择题A．It is very expensive.B．It will intensify global warming.C．It is environmentally friendly.D．It will replace other energy sources.

A．It is very expensive.
B．It will intensify global warming.
C．It is environmentally friendly.
D．It will replace other energy sources.

单项选择题A．Using solar energy can cut down on the consumption of fossil fuel.B．Fossil fuel has run out.C．The solar technologies are quite simple for current humans.D．Solar energy could save much money for everyone.

A．Using solar energy can cut down on the consumption of fossil fuel.
B．Fossil fuel has run out.
C．The solar technologies are quite simple for current humans.
D．Solar energy could save much money for everyone.