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SEKOLAH TINGGI KOTA KINABALU

UJIAN PERTENGAHAN PENGGAL 1 2008

ENGLISH FOR SCIENCE AND TECHNOLOGY

(ONE HOUR)

NAME :_______________________ CLASS:___________________

Text Completion: Rational Cloze

Read the following passages and then choose the bestanswerA,B, CorD.

.

Passage 1

Despite the huge potential in genetically modified foods, there are still some concerns

regarding their use. Many people are still not willing to _____(1)____ GM foods because

they are unsure if these types of food would negatively affect their health. Some scientist

are not sure of the long-term _____(2)_____ of GM foods. There is also much concernthat certain food crops might have genetic material from an animal source incorporated

into them. This would be an important concern for vegetarians and people who do notconsume certain types of _____(3)______ .

Thus, safety regulations for genetically modified foods have been outlined to

safeguard and protect human health. Whether a genetically modified food crop can be

accepted or not is established by determining whether it is equivalent to the conventionalfood in terms of composition, _____(4)_____ value and whether it contains toxins and

allergens. Moreover, the type of processing the food might undergo and its composition

must ensure that it is suitable for the people who are to consume it, such as the elderly orinfants. Where differences have been identified, the foods need to undergo extensive tests

and trials. Some of these tests might be simple while other might be lengthy. This____(5)____ on the nature of and experiences with the foods compared.Moreover, labeling of food and food ingredients in genetically modified foods

should also be made mandatory. This would allow consumers to make informed choices.

1. A. test 4 A. added

B. grow B. medical

C. produce C. nutritional

D. consume D. experimental

2. A. affects 5 A. relies

B. effects B. expandsC. concerns C. depends

D. influences D. identifies

3. A. meat

B. genes

C. grains

D. vegetables

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Passage 2

In human beings, cloning is a highly controversial issue for several reasons. It involvescreating human embryos in vitro and then destroying them, attempting to obtain

embryonic stem ____(1)____. But proposals to use cloning techniques in human stem

cell research raise a set of concerns beyond the moral _____(2)____ of the embryo. Thesehave led a number of _____(3)_____ and organizations who are not opposed to human

embryonic stem cell research to be concerned about, or opposed to, human research

cloning. One _____(4)____ is that cloning in human stem cell research will lead to thereproductive cloning of humans. A second concern is the appropriate sourcing of the

_____(5)_____ that are needed. Research cloning requires a large number of human

eggs, which can only be obtained from women. A third concern is the feasibility of

developing stem cell therapies from cloning.

1. A cells 4. A answer

B tissues B concern

C organisms C discussionD requirement

2. A name 5. A eggs

B status B tissue

C quality C organs

D muscles3. A bodies

B person

C preachersD individuals

Passage 3

Genetically engineering involves several processes. Firstly, the scientist _____(1)_____

the gene that conveys a particular trait of interest-disease resistance or faster growth, for

example. Then a molecular vehicle is created. A molecular vehicle will _____(2)_____the gene into the nucleus of the cell and permanently integrate it into the chromosome.

The entire construct is a ______(3)_____ gene and serves as a transport vehicle.

The gene will be _____(4)_____ into a fertilized egg using a glass needle viewed

under a microscope. Other approaches use disabled viruses to inject the construct into the

cell. If the egg _____(5)_____ and begins to grow and divide, then the potential embryois implanted into a surrogate mother.

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1. A detaches 4. A put

B isolates B pierced

C insulates C insertedD quarantines D injected

2. A take 5. A lastsB send B endures

C carry C outlives

D bring D survives

3. A interchanged

B transplanted

C misplacedD mixed

Passage 4

In most parts of the world, the entire land transport is based on petroleum fuel. There is a

growing concern that the world may run out of petroleum _____(1)______ . A number of

____(2)_____ fuels can take over petroleum as fuel. One of them is propane. Propane is aliquefied petroleum gas (LPG) consists mainly of propane, propylene, butane, and in

various _____(3)_____ . It is produced as a by-product of natural gas processing and

petroleum refining. The level of air-toxic ___(4)____ from propane-fueled vehicles islow. According to the National Gas Association, U.S.A., spark plugs from a propane

vehicle ____(5)____ from 80 000 to 100 000 miles and propane engines can last two to

three times longer than gasoline or diesel engines.

1. A wealth 4. A ejection

B capital B emissionC resources C exhalation

D properties D emanation

2. A optional 5. A stayB different B last

C substituted C sustain

D alternative D remain

3. A cocktails

B mixturesC compounds

D concoctions

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Passage 5

Water plays a major part in weight loss. Since water contains no calories, it can serve asan appetite suppressant, and helps the body _____(1)_____ stored fat. It may possibly be

one of the most _____(2)_____ factors in losing weight. Water is said to be the single

most important _____(3)_____ you take in every day. It is fat-free, cholesterol-free, lowin sodium, and completely without calories. Also, drinking more helps to reduce water

_____(4)_____ by stimulating your kidneys. Studies have recommended that if you are

_____(5)_____, according to average height and weight comparison charts, you shouldadd one glass of water to your daily requirement (of eight glasses) for every 25 pounds

over your recommended weight.

1. A clear 4. A retentionB discard B captivation

C metabolise C confinement

D manufacture D imprisonment

2. A clear 5. A slim

B obvious B diabeticC different C overweight

D significant D short-sighted

3. A foodB solvent

C liquid

D nutrient

Passage 6

Mosquitoes are insects belonging to the order of True Flies. Like all True Flies, they have

two wings, but unlike other flies, mosquito wings have scales. Female mosquitoesmouthparts _____(1)_____ a long piercing-sucking proboscis. Males differ from females

by having feathery antennae and mouthparts not for piercing skin. A mosquitos

_____(2)_____ food is nectar or similar sugar source.

Mosquitoes can be an annoying, serious problem in our _____(3)_____. They

interfere with work and spoil hours of leisure time. Their attack on farm animals cancause _____(4)_____ of weight and decreased milk production. Some mosquitoes are

capable of _____(5)____ diseases such as malaria, yellow fever, dengue, filariasis and

encephalitis.

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1. A form 4. A lose

B build B lost

C shape C lossD mould D losses

2. A chief 5. A transformingB prime B transfusing

C foremost C transmitting

D principal D transferring

3. A place

B vicinity

C environmentD neighbourhood

Thats all guysgood luck..

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STTSS S2 08 EST Est f5 Test12008