[单项选择]It is a newly-built plant which is supplied with（）machines.
A. a large amount of
B. a great deal of
C. plenty of
D. many a

[单项选择]Which is going to open a new plant
A. Shin-Etsu.
B. Mitsui Petrochemical.
C. Mitsubishi Petrochemical.

[填空题]Where does the plant grow

[单项选择]Endangered Species 　　Endangered species are plants and animals that are in immediate danger of extinction. Extinction is actually a normal process in the course of evolution. Since the formation of the earth, many more species have become extinct than those exist today. These species slowly disappeared because of change of climate and their failure to adapt to such conditions as competition and predation. Since the 1600s, however, the process of extinction has greatly accelerated as a result of both human population growth and technological encroachment on natural ecology systems. Today the majority of the world’s environments are changing faster than the ability of most species to adapt to such changes through natural selection. 　　Species become extinct or endangered for number of reasons, but the primary cause is the destruction of natural habitats. Drainage of wetlands, cutting and clearing of forests, growth of cities, and highway and dam construction have seriously reduced avail
A. Human beings are not aware of the importance of preserving endangered species.
B. Some endangered species have already reached the end of their life span in evolution.
C. The development of human society has greatly affected natural ecology systems.
D. The world’s climate has changed greatly that most species cannot survive.

[简答题]濒危植物(endangered plant)

[简答题]先锋植物(pioneer plant)

[单项选择]

Plant Gas
Scientists have been studying natural sources of methane for decades but hadn’t regarded plants as a producer, notes Frank Keppler, a geochemist at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. Now Keppler and his colleagues find that plants, from grasses to trees, may also be sources of the greenhouse gas. This is really surprising, because most scientists assumed that methane production requires an oxygen-free environment.
Previously, researchers had thought that it was impossible for plants to make significant mounts of the gas. They had assumed that microbes need to be in environments without oxygen to produce methane. Methane is a greenhouse gas, like carbon dioxide. Gases such as methane and carbon dioxide trap heat in Earth’s atmosphere and contribute to global warming.
In its experiments, Keppler’s team used sealed chambers that contained the same concentration of oxygen that Earth’s a
A. It was produced from plants.
B. It was not a greenhouse gas.
C. It was produced in oxygen-free environments.
D. It traps more heat than any other greenhouse gas.

[单项选择]