For questions 1 to 5 choose the suitable words to fill in the blanks.

The aurora consists of rapidly shifting patches and dancing columns of light of ... (1) hues. Extensive aurora displays are accompanied by disturbance in terrestrial magnetism and interference with radio, telephone, and telegraph transmission. The period maximum and minimum intensity of normal auroras is ... (2) low while the sun is very active. Huge displays that occur farther from the earth's poles than normal, however, occur more often while the sun is very active.
... (3) made during and after the 1957 and 1958 international geophysical year indicates that the auroral glow is triggered when the solar wind carries an influx on high-energy atomic particles emanating from sunspots. The electrons and protons the magnetosphere overan area centering on north and south magnetic poles and ... (4) about 20° away from them. These particles then collide with gas molecules in the atmosphere, thereby exciting the molecules and causing them to ... (5) electromagnetic radiation in the visible portion of the spectrum.

1.

A. various
B. vary
C. many
D. the

2.

A. normal
B. normally
C. norms
D. normality

3.

A. happenings
B. terms
C. studies
D. sciences

4.

A. far
B. range
C. spreading
D. extending

5.

A. produce
B. happen
C. emit
D. expel

For questions 6 to 9 choose the suitable words to fill in the blanks.

The cactus is a ... (6) of plant which may be found in the deserts. There is very little rain here but the cactus is able to ... (7) because it has special features which help it to adapt to the surrounding environment. The cactus is different from other types of plants in that its stems are swollen and its leaves are like prickles. The stem ... (8) water which helps the plant live. Because cactus leaves are so tiny, the moisture in the plant does not ... (9) into the air. Most plants lose their moisture through the surfaces of their leaves.

6.

A. series
B. type
C. variety
D. kind

7.

A. save
B. survive
C. maintain
D. keep

8.

A. has
B. absorbs
C. contains
D. elicits

9.

A. fly
B. escape
C. run
D. see

For questions 10 to 13 choose the suitable words to fill in the blanks.

Food is the ... (10) of energy for the body. Food and the energy it produces are important. Indeed we need this energy just to keep us ... (11). Naturally, energy is required to digest the food needed to produce energy in the first place. Moreover, energy is essential for all continuous body processes, such as breathing and beating the heart. Also children and youth need energy for ... (12). In brief, we need energy produced by food for carrying out all work and leisure activities.
However, when the food we eat provides more energy than is needed to meet the ... (13) of the body, the extra energy is stored as fat. As a result, we gain weight if we furnish the body regularly with too much food. On the other hand, the body uses stored fat if the foods we eat provide less energy than is needed. Accordingly, the body loses weight.

10.

A. sign
B. type
C. number
D. source

11.

A. alive
B. live
C. living
D. life

12.

A. playing
B. growth
C. raise
D. bigger

13.

A. need
B. demand
C. request
D. necessity

Kunci jawaban:

1. A
2. B
3. C
4. D
5. C
6. B
7. B
8. C
9. B
10. D
11. A
12. B
13. B