Scientists around the world are working to a medicine for AIDS（艾滋病）． （ cover）
My grandfather showed an interest in Beijing opera in his （fifty ）．
How shall we travel？By train or by plane？
Let's go by train，It's （cheap）．
Peter managed to repair the bike by （he）．
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spread common everywhere gift think twice wheel |
43．At Christmas my uncle gave me a watch as a ．
44．My brother is an untidy worker﹣﹣﹣he leaves his tools ．
45．The soldiers the map out on the floor．
46．You should about hiring someone you've never met before．
47．Young Tan Dun liked to make music with objects like stones and papers．
False Bay is South Africa． It is one of the（1） places in the world to see a great white shark． The great white shark is known for its（2） ﹣﹣the largest sharks can grow to six meters in length and over 2,000 kilometres in weight． Great white sharks are meat﹣eaters． They catch large（3） like tuna（金枪鱼），seals（海豹）and even whales，Great white sharks also（4） boats． Simon a British researcher， was lucky to get away safely when a shark bit into his boat． About three people are killed each year（5） great white sharks．
The sharks come to hunt 60，000 seals that live in False Bay， In order to find fish， the seals have to cross the deep water of the bay﹣﹣ this is where the sharks（6） ． Great white sharks are very good hunters．They wait below the seals and then swim（7） and crash into them by surprise at 40kilometers per hour， killing （8） with one bite．
Will a shark attack something that（9） like food？
Some researchers put a carpet in the shape of a seal（10） ． At high speeds the sharks can't tell the difference．
（11） a shark choose between a plant and a fish？
When scientists put tuna and sea﹣plant in the water， the shark bites into（12） ．Even though sharks eat meat， if a plant looks like an animal， the shark attacks．
Will a shark prefer to eat a human or a fish？
When the shark has a choice between humans and tuna， it is the（13） that attracts the shark's attention． Great white sharks clearly prefer fish to humans．
These researchers show that great white sharks are（14） hunters which will attack anything that looks and acts like a fish． （15） ， that means humans can also get bitten by mistake．
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（1）A． good |
B． well |
C． better |
D． best |
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（2）A． colour |
B． size |
C． speed |
D． shape |
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（3）A． pets |
B． insects |
C． sea﹣animals |
D． birds |
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（4）A． attack |
B． protect |
C． love |
D． follow |
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（5）A． for |
B． by |
C． with |
D． of |
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（6）A． wait |
B． rest |
C． sleep |
D． play |
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（7）A． around |
B． along |
C． down |
D． up |
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（8）A． us |
B． you |
C． it |
D． them |
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（9）A． looks |
B． sounds |
C． smells |
D． tastes |
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（10）A． on the ground |
B． in the sky |
C． in the water |
D． in the room |
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（11）A． Can |
B． May |
C． Must |
D． Should |
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（12）A． all |
B． none |
C． both |
D． neither |
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（13）A． human |
B． fish |
C． sea﹣plant |
D． boat |
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（14）A． amazing |
B． strange |
C． kind |
D． dangerous |
|
（15）A． Proudly |
B． Unluckily |
C． Finally |
D． Happily |
