[填空题]California has more than two thousand (47) of plants that are not found anywhere else. A new study says climate change could severely (48) these plants by the end of the century. Many could move northward and toward the Pacific coast in reaction to rising temperatures and (49) in rainfall. Others might climb up mountains to find the cooler climates they like.
But David Akeley at the University of California, Berkeley, says the (50) of climate change is greater than during ice ages in the past. He says plants that cannot move fast enough are in (51) of getting killed off before they can relocate. Changes in plants could also affect animals that depend on the plants for food.
About forty percent of all (52) plants in California are endemic, meaning that they are found only in that state. The new study says that for two out of three endemic plants, the areas where they are found could (53) by more

[填空题]California has more than two thousand (47) of plants that are not found anywhere else. A new study says climate change could severely (48) these plants by the end of the century. Many could move northward and toward the Pacific coast in reaction to rising temperatures and (49) in rainfall. Others might climb up mountains to find the cooler climates they like.
But David Akeley at the University of California, Berkeley, says the (50) of climate change is greater than during ice ages in the past. He says plants that cannot move fast enough are in (51) of getting killed off before they can relocate. Changes in plants could also affect animals that depend on the plants for food.
About forty percent of all (52) plants in California are endemic, meaning that they are found only in that state. The new study says that for two out of three endemic plants, the areas where they are found could (53) by more

[单项选择](By the 1980s) more than (two-fifth of) U.S. crop production was exported, (making) U.S. agriculture heavily (dependent) upon international markets.
A. By the 1980s
B. two-fifth of
C. making
D. dependent

[单项选择]Within two days, the army fired more than two hundred rockets and missiles at military （）in the coastal city.
A. goals
B. aims
C. targets
D. destinations

[单项选择]More than two hundred years ago the United States （） from the British Empire and became an independent country.
A. got off
B. pulled down
C. broke away
D. dropped off

[单项选择]

The first automobile was invented more than two hundred years ago. It used steam for power and had wooden wheels. The first automobile may have been simple and primitive, but it was an extremely important invention. The automobile today is the primary means of land transportation. It has produced more changes in our daily life than any other machines.
Almost all gasoline engines work in the same way—with four movements, or strokes, of a piston in a cylinder. The first stroke pulls the fuel mixture (gasoline and air) into the cylinder. The second stroke compresses the fuel mixture. A spark plug produces a spark that ignites the fuel mixture and causes the third stroke. The final stroke removes any waste gases which might remain in the cylinder.
The preceding paragraph explains what happens inside the cylinder to make the piston move. When the piston is pushed down by the explosion in the third stroke, it pushes the connecting rod. This rod rotates the cranksh
A. Automobiles
B. How a Car Works
C. The First Car
D. Cars and Roads

[填空题]Complete the following table with NO MORE THAN TWO WORDS, LETTERS OR A NUMBER.
Final Assessment Project
Weighting: (31) of total marks this year
Project task: (32)
Group size: Up to (33) people
Time to complete project: Before the (34) finishes
Prize sponsored by: (35) Incorporated