Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that need correction in each of the following questions
Alike light waves , microwaves may be reflected and concentrated elements.

A. Alike

B. waves

C. may be

D. concentrated

The weather is not beautiful all of the time. Perhaps you can remember a day when bad weather made you afraid. One kind of bad weather that scares many people is called a thunderstorm. This is what happens when there is a thunderstorm. First, you see a sudden flash of bright light. A few seconds later you hear a loud rumbling sound. This quick flash is called lightning and the loud sound is called thunder. Lightning is colorful , but it can cause serious problems. Lightning is electricity that is moving very rapidly. It may be moving between a cloud and the ground, between two clouds, or between two parts of the same cloud. The lightning heats the air around it. This hot air expands, or get bigger, and it causes the air to move in waves. The air waves pass you in a series, one after another. For this reason, you may hear many rumbles and not just one sound.

____ 29/ Lightning may move between a cloud and the ground.

____ 30/ Thunder is a very bright light in a thunderstorm.

____ 31/ When you hear thunder you may hear a series of loud sounds and not one

big sound. This is because the air waves pass one after another.

____ 32/ Lightning always moves rapidly.

Mark the letter A, B, C, or D on your answer sheet to show the underlinedpart that needs correction.

Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.

A. may be used         

B. Alike      

C. run         

D. to heat

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.

A. may be used

B. run 

C. to heat

D. Alike

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Alike  other forms of energy, natural gas may be used  to heat homes, cook food, and even run  automobiles.

A. Alike

B. may be used  

C. heat homes

D. run

Read the following passage and mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the questions

          According to some accounts, the first optical telescope was accidentally invented in the 1600s by children who put two glass lenses together while playing with them in a Dutch optical shop. The owner of the shop, Hans Lippershey, looked through the lenses and was amazed by the way they made the nearby church look so much larger. Soon after that, he invented a device that he called a “looker”, a long thin tube where light passed in a straight line from the front lens to the viewing lens at the other end of the tube. In 1608 he tried to sell his invention unsuccessfully. In the same year, someone described the “looker” to the Italian scientists Galileo, who made his own version of the device. In 1610 Galileo used his version to make observations of the Moon, the planet Jupiter, and the Milky Way. In April of 1611, Galileo showed his device to guests at a banquet in his honor. One of guests suggested a name for the device: telescope

          When Isaac Newton began using Galileo’s telescope more than a century later, he noticed a problem. The type of telescope that Galileo designed is called a refractor because the front lens bends, or refracts, the light. However, the curved front lens also caused the light to the separated into colors. This meant that when Newton looked through the refracting telescope, the images of bright objects appeared with a ring of colors around them. This sometimes interfered with viewing. He solved this problem by designing a new type of telescope that used a curved mirror. This mirror concentrated the light and reflected a beam of light to the eyepiece at the other end of the telescope. Because Newton used a mirror, his telescope was called a reflector

          Very much larger optical telescopes can now be found in many parts of the world, built on hills and mountains far from city lights. The world’s largest refracting telescope is located at the Yerkes Observatory in Williams Bay, Wisconsin. Another telescope stands on Mount Palomar in California. This huge reflecting telescope was for many years the largest reflecting telescope in the world until an even larger reflecting telescope was built in the Caucasus Mountains. A fourth famous reflector telescope, the Keck Telescope situated on a mountain in Hawaii, does not use a single large mirror to collect the light. Instead, the Keck uses the combined light that falls on thirty-six mirrors

          Radio telescopes, like optical telescopes allow astronomers to collect data from outer space, but they are different in important ways. First of all, they look very different because instead of light waves, they collect radio waves. Thus, in the place of lenses or mirror, radio telescopes employ bowl-shaped disks that resemble huge TV satellite dished. Also, apart from their distinctive appearance, radio telescope and optical telescopes use different methods to record the information they collect. Optical telescopes use cameras to take photographs of visible objects, while radio telescopes use radio receivers to record radio waves from distant object in space

What can be inferred about the first optical telescope?

A. It was bought by children 

B. It was invented in America

C. It was sold by a shop owner

D. It was invented by accident

Although thunder and lightening are produced at the same time, light waves travel faster _____, so we see the lightening before we hear thunder.

A. the same as sound waves                       

B. than sound waves are

C. than sound waves seem                         

D. than do sound waves

Mark the letter A,B,C or D on your answer sheet to show the underlined part that needs correction in each of the following question

There are a number of (A) reason why population (B) is concentrated in temperate regions, but the wide variety and (C) availability of animal and vegetable life may be (D) the most important

A. reason

B. is concentrated

C. availability

D. the most important