Plant and Animal Life of the Pacific Islands
Paragraph 1
There are both great similarities and considerable diversity in the ecosystems that
evolved on the islands of Oceania in and around the Pacific Ocean. The islands, such
as New Zealand, that were originally parts of continents still carry some small plant
and animal remnants of their earlier biota (animal and plant life), and they also 空手套白狼have
been extensively modified by evolution, adaptation, and the arrival of new species. By
置之死地而后生
contrast, the other islands, which emerged via geological process such as volcanism,
possd no terrestrial life, but over long periods, winds, ocean currents, and the feet,
feathers, and digestive tracts of birds brought the eds of plants and a few species of
animals. Only tho species with ways of spreading to the islands were able to
undertake the long journeys, and the various factors at play resulted in diver
combinations of new colonists on the islands. One estimate is that the distribution of
plants was 75 percent by birds, 23 percent by floating, and only 2 percent by wind.
1. The word “remnants” in the passage is clot in meaning to
A. remainders
B. reminders
C. reproductions
D. remblances
2. The passage supports which of the following statements about species on volcanic
islands?
A. Volcanic island species are unlike the species found in other Pacific Ocean
locations.
B. Volcanic islands lack the diversity of species found elwhere in the Pacific.
C. Volcanic Island species are all transplants from distant locations and exist in
combinations not found elwhere.
D. Volcanic island species differ from tho on other islands in that animal species
show greater diversity than plant species do.
3. According to paragraph 1, how did the majority of plant species arrive on islands
created by geological process such as volcanism?
A. They were transported by ocean currents.
B. They were carried to the islands by birds.
C. They were brought to the islands by humans.
D. They were transported by winds.
Paragraph 2
The migration of Oceanic biota was generally from west to east, with four major
factors influencing their distribution and establishment. The first was the size and
fertility of the islands on which they landed, with larger islands able to provide
hospitality for a wider range of species. Second, the further east the islands, generally
the less the species diversity, largely becau of the distance that had to be crosd
and becau the eastern islands tended to be smaller, more scattered, and remote. This
easterly decline in species diversity is well demonstrated by birds and coral fish. It is
estimated that there were over 550 species of birds in New Guinea, 127 in the
Solomon Islands, 54 in Fiji, and 17 in the Society Islands. From the west across the
Pacific, the Bismarck Archipelago and电气工程与智能控制 the Solomon Islands have more than 90
families of shore fish (with many species within the families), Fiji has 50 families,
and the Society Islands have 30. Third, the latitude 徐州有什么好吃的of the islands also influenced the
biotic mix, as tho islands in relatively cooler latitudes, notably New Zealand, were
unsuited to supporting some of the tropical plants with which Pacific islands are
generally associated.
4. The word “remote” in the passage is clot in meaning to
A.unknown
B. isolated
C. hostile
D. infertile
5. In paragraph 2, what is the author’s purpo in mentioning the estimated numbers
of birds and coral fish species on various Oceanic islands?
A.泰戈尔的诗歌 To give examples of the wide range of species that can be found on Oceanic
islands
B. To demonstrate how much knowledge about 叉烧酱的做法Oceanic species has been accumulated
C. To illustrate the decline in species diversity from west to east on Oceanic islands
D. To identify the influence of latitude upon Oceanic plants and animals
6. Which of the ntences below best express the esntial information in the
highlighted情人歌词 ntence in the passage? Incorrect choices change the meaning in
important ways or leave out esntial information.
A. Becau of its latitude, New Zealand had a relatively cooler climate than other
