Contents:
- Detail questions.
- Reference questions.
- NOT questions.
- Vocabulary questions.
- Main idea questions.

1. Detail questions:
Scientists have observed that warmer temperatures in the spring cause flowers to............ .
A. die instantly
B. bloom earlier
C. become lighter
D. lose color

Plants and animals will find it difficult to escape from or adjust to the effects of global warming. Scientists have already observed shifts in the life cycles of many plants and animals, such as flowers blooming earlier and birds hatching earlier in the spring. Many species have begun shifting where they live or their annual migration patterns due to warmer temperatures.

When their habitats grow warmer, animals tend to move.......... .
A. south - eastwards and down mountainsides toward lower elevations
B. north - westwards and up mountainsides toward higher elevations
C. toward the north pole and down mountainsides toward lower elevations
D. toward the poles and up mountainsides toward higher elevations

With further warming, animals tend to migrate toward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bear and marine mamals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.

2. Reference questions
The pronoun ' those' refer to.......... .
A. species
B. ecosystems
C. habitats
D. areas
With further warming, animals tend to migrate toward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bear and marine mamals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.

3. NOT questions
According to the paragraph, what is NOT true?
A. All species are especially at risk.
B. Some species are especially at risk.
C. Polar animals are at risk.
D. Marine mammals are at risk.
With further warming, animals tend to migrate toward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bear and marine mamals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.

4. Vocabulary questions
What does the word 'habitats' in the paragraph possibly mean?
A. facilities
B. living areas
C. farm land
D. culture sites
With further warming, animals tend to migrate toward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bear and marine mamals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.

5. Main idea questions
What does the passage mainly discuss?
A. influence of climate changes on human lifestyles
B. effects of global warming on animals and plants
C. global warming and possible solutions
D. global warming and species migration
With further warming, animals tend to migrate toward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bear and marine mamals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.