Water power uses moving water in rivers and dams(堤坝). Moving water has energy. Water power makes 16-80% of the electricity we use.Wind PowerIs wind power new? No, it isn't. People used wind power many years ago. Wind power makes 40% of the electricity we use.Solar Power...
(E)What are the main sources(来源)of green energy?(B)1. Water power uses moving water in rivers and dams(堤坝).Moving water has energy. Water power makes 16.6% of the elec-tricity we use.( D )2. Is wind power new? No, it isn't. People used wind pow er many years ago. Wi...
A huge spider lives in this hole. The goliath bird-eating spider lives in a deep burrow. it may dig its own burrow or use one that another animal no longer uses. A female stays in her burrow for most of her life. she lays around 50 ...
Directions: There are 4 passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A),B) ,C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single...
Water currents can be found in streams, rivers and oceans throughout the world. Water current is the rate of movement in the water, and ways to describe water current include its speed and direction. There are different types of water currents which beha
Sailboats What uses the wind to get from place to place? A sailboat! Sailboats have big sails that catch the wind. The sails use the wind to make the boat move.Every sailboat has one or more sails. A sail is a large piece of cloth. It is often in the shape of a triangle. The ...
Try to make good use of it. Maybe it will be your chance to bring home a big prize, too..Writers _ 46_ science fiction based on future or scientific discoveries.An Usually, many science fiction stories are about space travel or life on other planets 47introduction to Hai Y a uses a ...
chemical or biological change to the quality of water bodies—rivers, lakes, oceans and ground water—that has harmful effects on any living thing that uses or lives in it. Causes of water pollution include untreated sewage and waste from domestic households, industrial and agricultural activities,...
For the rowers keep on rowing. (A) And they’re certainly not showing (A) any signs that they are slowing! (A) Villanelle: ABA ABA ABA ABA ABA ABAA Challenge yourself further with a villanelle. Originating from France, a villanelle is a type of poem that uses a very p...
What are the uses of dry cleaning? Dry cleaning is used to clean delicate fabrics that cannot withstand the typical wet wash. 8 What are typical safety measures for wet areas? Non-slip mats, proper footwear, and caution signs are common safety measures in wet areas. 7 What does "wet pain...