E．nergy is obtained from rivers by______.

A． building bridges across them

B． driving generators into them

C． building dams across them

D． directing them into homes and factories

[单选题]Passage FiveF．rom the beginning rivers have played an important part in the life of man. Man of the earliest times used the rivers as a means of traveling. Today rivers still serve as a great waterway for the transport and people.In ancient times, ma

[单选题]The thins brought down by rivers from the mountains that are useful for cultivation are______.A． deltasB． cropsC． fresh water lifeD． soil and minerals

[单选题]The best oliveoil is obtained from olives that are [harvested] just after t

[单选题]The best oliveoil is obtained from olives that are [harvested] just after t

[单选题]We can use energy from the sun because ______.

[单选题]The best olive oilis obtained from olives that are [harvested ]just after t

[单选题]E．xposition is characterized by______.A．believable picturesB．diverse subject mattersC．a simple and direct explanationD．a number of causally linked events

[单选题]An energy analyst forecasts that the price per barrel of crude oil five yea

[单选题]Rivers bring_______.A． people and cropsB． life and wealthC． poverty and deathD． agriculture and bridge

[单选题]A moment is obtained by multiplying a force by its（）.A . coupleB . lever armC . moment of inertiaD . point of applicatio