[填空题]Tropical rain forest soils contain less volcanic soils than temperate forests.

[填空题]Tropical rain forest soils contain less volcanic soils than temperate forests.

[填空题]Acid rain may damage trees, soils and accelerate the decay of buildings.

[单项选择]The tropical rain forest belt extending around our planet at the equator (赤道) has taken some 60 million years to evolve to its present state. It is, quite simply, the most complex and the most important ecosystem (生态系统) (47)________ earth. Homo Faber, Man the Builder, has tragically always seen the jungle (48)________ an enemy, an environmerit (49)________, replaced with his own constructions. In the (50)________ twenty years the rate of destruction has increased alarmingly (51)________ huge areas of green, beautiful forest — an irreplaceable treasure house of living things—has given (52)________ to wasteland. The evidence is that man will redouble (53)________ destructive efforts until the forest system is smashed, and the jungle will (54)________ no more. Many experts predict the tropical rain forests will finally (55)________ around the end of our (56)________. Well done, 20th century. WORD BANK A. or B. vanish C. century D. his E. u

[填空题]

The moist breath of the surrounding rain forest flows through you with each lungful of air as the small group makes its way along the narrow trail carved out of the steep river bank. Above, sunlight filters through the high canopy(天棚); be low, the river flows lazily along, its high banks thick with jungle growth. You walk along the narrow path in the late morning sun, the jungle and your fellow hikers glistening in the hot dampness of the rain forest. Every several yards, your guide turns and explains the animals and plants surrounding you, or maybe a historical tidbit about the ancient trail you follow. Occasionally a raised hand abruptly motions the group to silence, a half- dozen pairs of eyes follow the guide’s stare; pee ring into the dense bush.., a sighting of an endemic jungle bird, a rare privilege to see and hear. You clamber along the trail, taking it all in.
As you walk along, you think about all the different angles you can use to write and publ