I. Choose the word whose underlined part is pronounced differently. ⇱
II. Choose the word that has a different stressed syllable from the rest. ⇱
III. Choose the best option (A, B, C or D) to complete each of the following questions. ⇱
IV. Write the correct form of the words in brackets. ⇱
V. Read the passage and choose the best option to answer each of the following questions. ⇱
Wind is a form of solar energy. Winds are caused by the uneven heating of the atmosphere by the sun. Wind flow patterns are changed by the earth’s terrain, bodies of water, and vegetative cover. This wind flow, or motion energy, when “harvested” by modern wind turbines, can be used to generate electricity.
Wind turbines are available in a variety of sizes, and therefore power ratings. The largest machine has blades that span more than the length of a football field, stands 20 building stories high, and produces enough electricity to power 1,400 homes. A small home-sized wind machine has rotors between 8 and 25 feet in diameter and stands upwards of 30 feet and can supply the power needs of an all-electric home or small business, utility scale turbines range in size from 50 to 750 kilowatts. Single small turbines, below 50 kilowatts, are used for homes, telecommunications dishes, or water pumping.
VI. Read the passage and choose the correct answer A, B, or C to fill each blank. ⇱
A hoverboard can bring ___(26)___ a lot of benefits. It is self-balancing so it is safe for ___(27)___. It is also fun because it connects to a music speaker with a phone, so riders can enjoy music while ___(28)___ on the road. It can also give riders a smooth ___(29)___. It runs on electric battery. Its run time is 30 minutes but you may have to wait 2-3 hours for the battery to ___(30)___. Because hoverboards are safe, easy to use, and inexpensive, they will be around for long for the children to enjoy.